The research team employed a survey-based technique known as the double-bounded dichotomous choice contingent valuation method, or CVM, one of the most widely used tools in environmental economics for pricing goods that never appear on any market. Clean air is a classic example of such a non-market good: no one buys a unit of reduced mortality risk at a store, yet people clearly value it. Contingent valuation works by constructing a hypothetical market. Respondents are asked whether they would pay a specific amount for a defined improvement in this case, a policy that reduces mortality risk by one in ten thousand. In the double-bounded variant, a follow-up question adjusts the offered amount depending on the first answer, tightening the statistical bounds around each household’s true willingness to pay and yielding far more precise estimates than a single yes-or-no question.

The headline numbers are striking. The researchers found that the average South Korean household would be willing to pay 41,643 Korean won per year, roughly 29.75 US dollars, for a policy that cuts PM2.5-related mortality risk by one in ten thousand. Scaling that per-household figure against the size of the risk reduction yields a Value of a Statistical Life, or VSL, of approximately 416.4 million won, or about 297,428 US dollars. The VSL is a cornerstone metric in health and safety economics; it does not assign a price to any identifiable person’s life, but rather measures how much a population collectively values small reductions in the probability of death. Regulators around the world use VSL estimates to weigh the costs of pollution controls, traffic safety measures, and workplace protections against the mortality benefits they deliver.

When the per-household values are extrapolated across the entire nation, the aggregate picture becomes dramatic. The study calculates a total annual social benefit of approximately 681.9 billion won, equivalent to roughly 487 million US dollars, for achieving the specified mortality risk reduction. That figure represents the economic dividend that cleaner air would deliver to Korean society each year, and it provides policymakers with a concrete benchmark. If a proposed regulation, such as stricter emissions standards for factories or tighter controls on construction dust, costs less than this aggregate benefit to implement, the economic case for action becomes compelling. In effect, the study converts an abstract public health aspiration into the language of cost-benefit analysis that finance ministries and legislatures understand.

Perhaps the most intriguing finding, however, concerns not money but information. The analysis revealed that household willingness to pay was significantly influenced by income, which is consistent with standard economic theory, since richer households can afford to spend more on risk reduction. But the strongest and most notable driver was public awareness of existing environmental policies and access to information about air quality. Households that knew more about what their government was already doing, and that had better access to pollution data, expressed systematically higher valuations for further improvements. This suggests that willingness to pay is not a fixed psychological constant but a socially conditioned variable, shaped by how transparently governments communicate and how engaged citizens are with environmental issues.

The implications of that awareness effect ripple outward in two directions. First, it means that public engagement campaigns and information disclosure programs are not merely decorative additions to environmental policy; they are critical co-factors that can amplify the perceived value of clean air interventions and, by extension, the political feasibility of funding them. A government that invests in real-time air quality monitoring, accessible public dashboards, and clear communication about policy goals may simultaneously raise the societal benefit it can claim for its pollution control programs. Second, the finding offers a caution: if citizens distrust or remain unaware of existing policies, their stated willingness to pay may understate the true social value of clean air, leading to systematic underinvestment in mitigation.

Methodologically, the study sits within a rich tradition of Korean and international research on the economics of air pollution. Earlier Korean studies estimated willingness to pay for reductions in coarse particulate matter, examined averting expenditures on protective masks and air purifiers, and applied contingent valuation to Seoul’s air quality. Internationally, comparable work in Beijing, Tehran, and China’s Jing-Jin-Ji region has documented similarly substantial public valuations of particulate matter risk reductions, while global assessments by the OECD and the Global Burden of Disease project have framed air pollution as one of the largest environmental health burdens worldwide. The new Korean estimates add a carefully constructed, nationally relevant data point to this comparative landscape, one that reflects both the country’s distinctive pollution profile and its citizens’ evolving environmental consciousness.

The technical rigor of the double-bounded design deserves emphasis, because contingent valuation has historically faced skepticism about hypothetical bias, the tendency of survey respondents to overstate what they would actually pay in a real transaction. By using two linked binary choices per respondent, the method narrows each individual’s valuation interval and allows researchers to model responses with econometric frameworks rooted in the utility theory first formalized for discrete choice contexts by Hanemann in the 1980s. The researchers also had to grapple with protest zero bids, responses in which people reject the payment premise altogether, often because they believe polluters or the government, not citizens, should bear the cost. How such protests are treated can materially shift the final estimate, and the Korean literature has developed dedicated protocols for identifying and handling them.

For South Korea specifically, the timing of this valuation is significant. The country has experienced recurring springtime haze episodes, driven by a combination of domestic emissions from industry, power generation, and transportation, and transboundary transport of pollutants from neighboring regions. Public concern over fine dust has become a fixture of Korean civic life, with mask-wearing and air purifier purchases now routine household responses. By quantifying the mortality-related benefits of risk reduction in monetary terms, the study gives Korean policymakers a defensible economic foundation for investments in cleaner production technologies, emissions controls, and cross-border cooperation. The authors frame their results as a pathway for aligning public health objectives with sustainable development goals, a framing that resonates as nations weigh climate and air quality policies against economic growth pressures.

Ultimately, the study’s broader lesson may be its most viral takeaway: the value of clean air is not an abstraction that only economists can compute, but a measurable quantity that ordinary households reveal every time they answer a survey, buy an air purifier, or demand better information from their government. A single household’s 29.75 dollars a year may seem modest, but multiplied across millions of homes, it becomes nearly half a billion dollars of annual social value attached to a one-in-ten-thousand reduction in pollution mortality. That arithmetic transforms air quality from a public health talking point into a bankable policy asset, and it sends a clear signal to governments everywhere: investing in transparency and public engagement is not just good governance, it is a direct multiplier on the economic returns of every clean air program they fund.

Subject of Research: Economic valuation of mortality risk reductions from PM2.5 air pollution in South Korea using contingent valuation

Article Title: Valuing clean air: economic assessment of mortality risks from PM2.5 in South Korea

Article References: Lee, H., Kwon, D., Choi, S., & Kim, B. H. S. (2026). Valuing clean air: economic assessment of mortality risks from PM2.5 in South Korea. Air Quality, Atmosphere & Health, 19(11), Article 240. https://doi.org/10.1007/s11869-026-02062-w

Image Credits: AI Generated

DOI: 10.1007/s11869-026-02062-w

Keywords: PM2.5, air pollution, contingent valuation, willingness to pay, value of statistical life, South Korea, environmental economics, health economics, mortality risk, environmental policy, public awareness, air quality

The stakes of the question are enormous. Aso’s volcanic landscape, particularly its grasslands, acts as a vast natural sponge. Forests, grasslands, and agricultural land regulate infiltration, evapotranspiration, runoff, and water storage, recharging the groundwater that feeds six major rivers, including the Chikugo and Shirakawa Rivers. Roughly 2.3 million people across Kyushu depend on this water for domestic use, and the Chikugo River system alone supplies about 30 percent of the municipal water for the Fukuoka metropolitan area, home to approximately 2.5 million people. Yet the ecosystem functions behind this supply are quietly eroding. Japan’s aging and depopulating rural communities can no longer maintain the grasslands through traditional burning and grazing, while urbanization has paved over paddy fields that once recharged aquifers. Without conservation measures, the researchers estimate, groundwater recharge would decline by roughly 4 million cubic meters of water every year.

Because these benefits are not traded in markets, their economic value can go unrecognized, leaving water-source areas underfunded. The contingent valuation method, or CVM, is the classic tool for making such invisible value visible. Respondents are presented with a hypothetical conservation program and asked how much they would pay for it, allowing economists to quantify use and non-use values alike. Previous CVM work in the region showed real financial support: a study by Yamane and colleagues estimated that Kumamoto City residents would pay a median of 1,045 yen per household per month for groundwater conservation policies. But a crucial empirical question remained open. Previous research had demonstrated that symbolic species can inflate stated conservation values, yet almost nothing was known about whether the same mechanism applies to symbolic places. Does naming the landscape that provides an ecosystem service change its perceived value, even when the service itself is described identically?

To find out, the team ran a randomized controlled experiment embedded in a nationwide internet survey conducted through the contractor Nikkei Research between December 7 and December 21, 2020. About 80 percent of the 8,407 respondents were drawn from Kyushu, the primary beneficiary region, with the remainder included to capture values among geographically distant populations whose valuation may reflect non-use values. After screening out respondents who withheld income information or answered that they did not know, the final analytical sample comprised 6,448 valid responses, roughly half university graduates, with a mean age of about 48 years.

The experimental design was elegantly minimal. All respondents received the same information about the water-related ecosystem services of forests, grasslands, and paddy fields, their contribution to groundwater recharge, the expected 4 million cubic meter annual decline, a map of the river systems, and a conservation program funded by a household tax added to water bills. Willingness to pay was elicited with a payment card spanning 0 to 20,000 yen or more per year. The only difference was one sentence. In the treatment group, respondents read that the mountains in the Aso region supply approximately 62.9 billion cubic meters of water annually to Kyushu prefectures. In the control group, the identical figure was attributed generically to mountains, without reference to Aso. Because the quantity of water, the expected reduction, the conservation activities, the payment vehicle, and the payment duration were held constant, any difference in stated value could be attributed to the place name itself.

The results upended the researchers’ primary hypothesis. In the pooled sample, the conservative Turnbull lower-bound mean was 1,825.69 yen per household per year when Aso was mentioned, rising to 2,009.83 yen when it was not. The Kriström mean, which takes the midpoint of each payment range, showed the same direction: 1,997.89 yen with the name versus 2,186.35 yen without. Within Kyushu, the pattern was statistically significant. A Mann-Whitney U test rejected the null hypothesis of equal willingness-to-pay distributions between the informed and uninformed groups, with a small but significant negative effect size. By contrast, outside Kyushu the trend reversed: the nonparametric estimates rose from 1,835.17 yen to 1,916.88 yen when Aso was named, although this difference was not statistically significant. The authors suggest that for people beyond Kyushu, Aso functions as a symbolic representation of the region’s mountains, whereas for Kyushu residents it is simply one mountain among many.

To probe the determinants of stated value, the team complemented the nonparametric estimates with an interval regression model that respects the interval-censored nature of payment-card responses, treating each respondent’s latent maximum willingness to pay as lying between the lower and upper bounds of the chosen range. The coefficient on the Aso information variable was negative in every full-sample specification, statistically significant in most, and implied, after transformation, an 11.3 to 25.5 percent decrease in willingness to pay when the name was provided. Crucially, none of the interaction terms between the Aso treatment and Kyushu residence, urban residence, or frequency of visits to water sources was significant, offering no evidence that the effect differed systematically across these groups. Respondents in Kyushu, frequent visitors to rivers, forests, and water sources, women, older respondents, university graduates, higher-income earners, and those with greater environmental knowledge all reported higher willingness to pay, with income and knowledge showing particularly strong associations.

Why would a famous name reduce stated support? The authors propose a perceived scope effect. Although the amount of water protected was identical across treatments, respondents may have interpreted the Aso-specific scenario as covering a geographically narrower area than the generic reference to mountains, changing not only the salience of the name but also the perceived spatial scope of the conservation target. Alternative explanations, including beliefs that a famous destination already receives sufficient public funding or doubts about the need for additional support, cannot be excluded. The absence of a positive Aso premium also contrasts sharply with previous findings on charismatic species, suggesting that recognizable place names may operate differently from recognizable species names in the psychology of stated preference. The authors caution that binary geographic indicators cannot capture continuous distance, watershed location, or actual dependence on Aso-derived water, so more localized spatial effects remain possible.

The study carries a practical message for conservation finance. Regardless of information provision, the demographic and behavioral profile of high stated value, women with university degrees, higher incomes, and deeper knowledge of how ecosystems retain water and recharge groundwater, points to a potential target for funding conservation efforts. Fostering a deeper public understanding of the ecosystem services provided by forests, grasslands, and paddy fields may be a more effective strategy than simply naming the place. The authors also acknowledge limitations: the payment-card format may be susceptible to range effects, internet surveys carry risks of respondent inattention, and hypothetical bias is inherent to contingent valuation. Future work should vary the place name independently of the conservation area’s stated boundaries and compare stated values with revealed-preference evidence. For now, the lesson is counterintuitive and viral in its implications: when it comes to paying for water, fame may not be the currency that counts.

Subject of Research: Environmental Economics

Article Title: Place-specific information and its heterogeneous effects on willingness to pay for water resources: a case of Aso, Japan

Article References: Wakamatsu, M., Kumagai, J., & Managi, S. (2026). Place-specific information and its heterogeneous effects on willingness to pay for water resources: a case of Aso, Japan. Environmental Challenges, 25, Article 101682. https://doi.org/10.1016/j.envc.2026.101682

Image Credits: AI Generated

DOI: 10.1016/j.envc.2026.101682

Keywords: contingent valuation, water resources, ecosystem services, Aso, Japan, willingness to pay, conservation finance, Kyushu, Place-specific, information, heterogeneous, effects

The research team, led by Xiaoke Yang of Fujian University of Technology together with colleagues from the Affiliated Rehabilitation Hospital of Fujian University of Traditional Chinese Medicine, focused on a population that has long been overlooked in gerontological research. Most studies of elder care concentrate on disabled or semi-disabled individuals, whose needs are dominated by medical and nursing support. But healthy, self-caring older adults make up roughly 85 percent of China’s elderly population, and their preferences have remained largely unmeasured. Recent national data suggest that average self-care ability among older Chinese adults has been improving while disability rates decline, making this gap in knowledge increasingly consequential for anyone planning services for the coming decades.

To capture those preferences, the researchers deployed a discrete choice experiment, a stated-preference technique widely used in health economics to quantify how people trade off competing attributes of a service. Rather than simply asking participants what they like, a DCE presents repeated hypothetical choices between carefully constructed service packages, forcing respondents to reveal their priorities through the decisions they make. In this study, each choice set offered two hypothetical home care scenarios alongside a “Neither” option, allowing participants to reject both if neither appealed. The design was generated with Ngene software using a D-optimality criterion, which minimizes the variance of estimated parameters and maximizes the statistical precision of the results.

The experiment was built around four non-monetary service domains, each with three levels, plus a monetary attribute. Healthcare services ranged from nothing to basic vital-sign monitoring of heart rate, blood pressure, and blood sugar, or physiotherapy rooted in traditional Chinese medicine, including electronic massage, moxibustion, and foot reflexology. Safety services spanned a one-button emergency call system and monthly home safety assessments that identify hazards and suggest improvements. Household affairs management covered home repair services for water, electricity, and other utilities, as well as bill payment assistance. Emotional care ranged from weekly phone calls to bi-weekly organized social activities. Monthly payments ranged from zero to 200 yuan, with 7.0467 yuan equal to one US dollar on average in 2023.

Developing the attributes was itself a multi-stage exercise. The team began with a literature review and focus group discussions involving six experts, two each from gerontology, public health, and elder care, together with ten healthy older adults. A pilot test with 35 participants then refined the wording until each attribute was clearly understood, and a larger pilot with 86 respondents supplied the prior estimates used in the experimental design. Thirty-six choice sets were created and divided into twelve blocks, so each respondent evaluated only three choice scenarios, a technique that reduces cognitive burden without sacrificing analytical depth. Every service level was presented in both text and illustration to further ease comprehension.

Data collection took place face-to-face between July 15 and August 7, 2024, across six central districts of Xi’an: Xincheng, Beilin, Lianhu, Weiyang, Yanta, and Baqiao. Using multistage random sampling, the researchers selected nine residential communities per district, stratified by housing price percentiles from the 10th to the 90th, and recruited thirty adults aged 60 and above from each. Of the 1,620 participants, 1,283 questionnaires survived a rigorous screening process that removed 71 protest zeros, 186 responses flagged by self-assessment items, and 80 more excluded on the basis of interviewer evaluations. The final sample averaged 69.4 years of age, was 65.2 percent female, and closely matched official statistics for the city, lending the results considerable representativeness.

The analytical engine was a mixed logit model, estimated in Stata with 2,000 Halton draws. Unlike a standard logit model, which assumes everyone shares identical preferences, the mixed logit allows each individual’s coefficients to vary randomly across the population, capturing genuine heterogeneity in tastes. The payment coefficient was specified as log-normally distributed, a standard approach that guarantees the marginal utility of money stays negative, while the eight service variables followed normal distributions. Model fit was strong, with a McFadden pseudo R-squared above 0.2 and a log-likelihood test significant at the one percent level. Willingness to pay for each service was then computed using the Krinsky and Robb simulation method, which generates proper confidence intervals by repeatedly resampling the estimated parameter distributions.

The headline finding is striking: the single most valued service was home repair, worth 162 yuan per month, followed by traditional Chinese medicine physiotherapy at 125 yuan and social activities at 103 yuan. Respondents were on average willing to pay 628 yuan per month for the full bundle of services. The authors attribute the dominance of home repair to information asymmetry, a classic concept from economics. Older adults often struggle with modern appliances and face non-transparent repair markets riddled with exaggerated problems, substandard work, and inflated prices; outsourcing repairs at a fixed, transparent price eliminates those hidden costs. The strong showing of TCM physiotherapy reflects a cultural shift from disease treatment toward disease prevention and wellness maintenance, while the high valuation of social activities suggests that existing opportunities for organized social engagement fall short of what older adults actually want.

At the other end of the ranking, the one-button emergency call system commanded the lowest willingness to pay, at just 23 yuan per month, plausibly because smartphones and smart voice assistants already provide similar functions. Bill payment assistance ranked second lowest at 27 yuan, though with the highest variability of any service, suggesting that family help and urban smart-service terminals have already absorbed much of that need. Basic health monitoring drew a moderate 39 yuan, while home safety assessments, frequently discussed in the aging-in-place literature, earned a solid 47 yuan per month. Regular supportive phone calls were valued at 65 yuan, confirming that even healthy older adults place real monetary weight on emotional connection.

The heterogeneity analysis, conducted through Tobit-style regression on individual-level willingness-to-pay estimates, revealed clear demographic patterns. Women, older adults living alone, those with worse self-reported health, those holding endowment insurance for urban workers, and those under less financial pressure all showed significantly higher overall willingness to pay. Men were willing to pay roughly 36 yuan less per month than women, driven mainly by lower valuations of household affairs and emotional care, while living alone added about 46 yuan, concentrated in healthcare and emotional services. Each step toward better self-reported health reduced willingness to pay by about 17 yuan, and greater financial pressure reduced it by about 40 yuan, with employee medical insurance adding nearly 44 yuan.

The aggregate implications are enormous. The authors estimate that roughly 85 percent of adults aged 60 and above in Xi’an’s main urban areas qualify as healthy older adults, amounting to about 0.69 million people. Applying the study’s average willingness-to-pay figure to that population yields an annual aggregate demand of approximately 5.19 billion yuan, equivalent to about 0.6 percent of the gross domestic product of Xi’an’s main urban areas in 2024. That figure represents latent market demand waiting to be organized into viable service offerings, and it arrives just as Xi’an’s Civil Affairs Bureau has drafted an implementation plan encouraging public-private partnerships to deliver inclusive home care.

The study’s broader message is that home care for healthy older adults should not be designed as a one-size-fits-all package. The needs of functionally independent older adults extend well beyond traditional medical support into practical household assistance, preventive care, and social engagement, and the substantial variation across gender, health status, living arrangement, and insurance type means different subgroups require different service configurations. The authors acknowledge limitations: the sample was restricted to Xi’an, the cross-sectional design captures preferences at only a single point in time, and the attribute set could be expanded to include cultural and regional factors. Still, as China races toward super-aged status, this experiment provides one of the clearest quantitative roadmaps yet for building home care systems around what older adults themselves say they want, rather than what service providers assume they need.

Subject of Research: Willingness to pay for home care services among healthy older adults in Xi'an, China, measured with a discrete choice experiment and mixed logit model

Article Title: Healthy older adults' preferences for home care services

Article References: Yang, X., Chen, T., Ke, J., Lin, H., & Fan, W. (2026). Healthy older adults' preferences for home care services. Frontiers in Public Health, 14, Article 1967098. https://doi.org/10.3389/fpubh.2026.1967098

Image Credits: AI Generated

DOI: 10.3389/fpubh.2026.1967098

Keywords: home care services, healthy older adults, discrete choice experiment, willingness to pay, mixed logit model, aging population, China, Xi'an, traditional Chinese medicine, elder care policy, preference heterogeneity, public health

The research team constructed a model linking six psychological constructs that heritage scholars have debated for years. At the center sits the digital museum experience itself, the sum of what a visitor encounters when navigating virtual exhibitions, interactive collections, and online interpretive content. Around it, the researchers positioned perceived value derived from social media, visitor satisfaction, cultural identity, museum loyalty, and finally willingness to pay higher prices. The logic of the chain is intuitive but had rarely been tested end to end: if digital experiences and social media make people feel satisfied and culturally connected, that satisfaction and connection should deepen loyalty, and loyalty should translate into economic support. The study tested each link statistically rather than assuming it.

Methodologically, the team surveyed 385 respondents recruited through snowball sampling, a technique in which initial participants refer others, expanding the sample through social networks. The data were collected between April 14, 2024, and May 17, 2024, following ethical approval from the Institutional Review Board of Jiangsu University granted on March 25, 2024, under protocols consistent with the Declaration of Helsinki and the ethical codes of the American Psychological Association. Participants were fully informed of the survey’s purpose, the voluntary nature of participation, and their right to withdraw at any time. The researchers then processed the responses in SPSS and ran structural equation modeling in AMOS 24, a technique that allows simultaneous estimation of multiple causal pathways among latent variables that cannot be observed directly but are inferred from clusters of survey items.

Structural equation modeling is particularly well suited to this kind of question because it treats concepts like satisfaction or cultural identity as latent constructs measured through multiple indicators, and it estimates the strength of the paths connecting them while accounting for measurement error. In this study, the results were strikingly coherent. The digital museum experience significantly influenced visitors’ satisfaction, their sense of cultural identity, and their loyalty to the museum. Perceived value from social media showed the same triple effect, significantly boosting satisfaction, cultural identity, and loyalty. In other words, both the curated online exhibition and the informal chatter of social platforms feed into the same psychological pipeline that ends in commitment to the institution.

The downstream links proved equally robust. Greater museum loyalty correlated with a greater willingness to pay higher prices, a finding that transforms the often abstract language of engagement into something museum finance officers can act upon. Loyalty, in this model, is not a vague sentiment but a measurable predictor of revenue behavior. For institutions struggling with post-pandemic attendance volatility and shrinking public subsidies, the implication is that investment in digital experience quality is not a marketing luxury; it is a direct input into the willingness of audiences to open their wallets for tickets, memberships, and premium digital offerings.

Perhaps the most theoretically interesting results came from the mediation analyses. Visitor satisfaction was found to mediate the relationship between the digital museum experience and museum loyalty, meaning that digital experiences do not build loyalty directly so much as they build it through the satisfaction they generate. Similarly, cultural identity mediated the relationship between perceived value from social media and museum loyalty, indicating that social media’s power lies in its ability to make people feel that a museum’s heritage is part of who they are. These mediation findings refine the causal story considerably. A slick virtual tour that leaves visitors cold will not produce loyal patrons, and a viral social media campaign that fails to resonate with users’ cultural self-image will not convert clicks into commitment.

The researchers also examined age as a moderating variable, testing whether the relationships in their model differed across generational groups. Using multi-group analysis, a procedure that compares whether path coefficients are statistically equivalent across subgroups, they found that the proposed relationships did not differ significantly by age. Digital engagement levels were consistent across age groups, a result that challenges the widespread assumption that digital museum strategies are fundamentally youth-oriented. Older audiences, according to this data, respond to digital experiences and social media value in much the same way younger ones do, deriving satisfaction and cultural connection from them at comparable rates.

That age finding deserves particular attention because it upends a common strategic reflex. Many heritage institutions design their digital offerings with an implicit demographic target, assuming that virtual reality tours and social media campaigns are the province of digital natives while older visitors remain attached to physical galleries. The multi-group results suggest instead that the psychological mechanisms linking digital experience to loyalty operate across the age spectrum. A museum investing in online engagement is therefore not merely courting a younger demographic; it is building loyalty infrastructure that serves its entire audience, from students encountering collections through TikTok clips to retirees exploring digitized archives from home.

The study’s authors frame these findings as having significant implications for enhancing user engagement, fostering loyalty, and improving the sustainability of digital heritage platforms. Sustainability is the operative word. Cultural institutions worldwide face a structural dilemma: physical visitation is constrained by geography, capacity, and cost, while digital reach is potentially global but historically difficult to monetize. By demonstrating an empirical pathway from digital experience through satisfaction and identity to loyalty and ultimately to willingness to pay, the research offers a business model sketch for the virtual museum. The monetizable asset is not the digital content itself but the psychological bond it creates, a bond that audiences appear ready to reward financially.

There are, of course, boundaries to what a single survey can establish. Snowball sampling, while efficient for reaching engaged audiences, does not produce a probability representative sample, and the cross-sectional design captures associations at one point in time rather than proving causal direction over the long term. Willingness to pay, moreover, is a stated intention rather than an observed transaction. Yet the rigor of the structural equation approach, the mediation tests, and the multi-group age comparison give the findings a solidity that goes well beyond anecdote. As museums continue their migration from marble halls to mobile screens, this study provides something rare in the heritage digitization debate: quantitative evidence that the digital experience, done well, does not dilute the museum’s relationship with its audience but deepens it, and that audiences, whatever their age, will reward that deepening with loyalty and, crucially, with money.

Subject of Research: How digital museum experiences shape visitor loyalty and willingness to pay

Article Title: Exploring the transition from traditional museums to digital experiences: implications for online engagement and willingness to pay

Article References: Hussain, A., Kanwel, S., Ma, Z., Li, M., Hussain, B., & Hu, W. (2026). Exploring the transition from traditional museums to digital experiences: implications for online engagement and willingness to pay. Humanities and Social Sciences Communications. https://doi.org/10.1057/s41599-026-09355-6

Image Credits: AI Generated

DOI: 10.1057/s41599-026-09355-6

Keywords: digital museums, visitor loyalty, willingness to pay, social media, cultural identity, visitor satisfaction, structural equation modeling, heritage digitization, online engagement, museum economics, snowball sampling, age moderation

The study, published in Frontiers in Behavioral Economics, asked a deceptively simple question: does the occasion of purchase, self-consumption versus gift-giving, change not only what people say they want but how their eyes and brains process the information on the label? Gift-giving has long been described in the consumer literature as a highly involved, emotionally loaded process. The giver faces impression management and perceived risk, amplified when the recipient’s tastes are unknown and the product itself is unfamiliar. Wine is a natural testbed because it is routinely purchased both for personal drinking and as a gift, yet almost all prior comparisons of the two occasions relied on surveys and choice experiments, which reveal what people choose but say little about the cognitive machinery underneath.

Forty-seven participants were recruited through an online screening survey and took part in laboratory sessions in Minneapolis in December 2024 and Portland in May 2025. All were at least 21 years old, had drunk wine within the past year, had normal or corrected-to-normal vision, and reported no neurological disorders. Each session lasted roughly 80 minutes and was compensated at 60 dollars. After excluding ten participants for unusable EEG recordings or incomplete eye-tracking data, the final analytical sample comprised 37 people, 18 in the self-consumption condition and 19 in the gift-giving condition. Random assignment produced statistically balanced groups on age, gender, income, education, wine expertise, and familiarity with disease-resistant grapes, and the study protocol was approved by the University of Minnesota’s Institutional Review Board.

The experimental stimuli were front labels of a fictitious white blend wine, varying systematically across four attributes: a sustainability badge with four levels (disease resistant, climate resilient, reduced agrichemicals, or no badge), a creative phrase (Friend of the Environment, Future of Wine, or none), customer reviews (three or five stars), and price ($9.99, $14.99, or $21.99 per 750 ml bottle, anchored to average US white wine prices). A non-GMO logo appeared on every label to defuse the GMO confusion documented in earlier work. A balanced fractional factorial design yielded 24 unique label combinations, and everything else on the label, brand logo, grape blend, alcohol content, color scheme, typography, was held constant. Attribute placement followed the well-documented Z-pattern of visual scanning, with badges in the top left corner and the non-GMO logo at the bottom right.

Each participant saw all 24 labels repeated 17 times, for 408 trials plus practice rounds. Every trial began with a 500-millisecond fixation cross, followed by a 4-second presentation of the label, another fixation cross, and then an untimed five-point Likert rating of purchase likelihood. The repetitions were not gratuitous: event-related potentials, the brain’s stimulus-locked voltage deflections, are extracted by averaging across many trials to push the signal above the noise. Eye movements were recorded with a Tobii Pro Fusion tracker at 60 Hz, while a 64-channel Ant Neuro EEG cap sampled brain activity at 500 Hz, with TTL markers from the presentation software synchronizing the two data streams to the millisecond. Participants sat about 68.5 centimeters from a 27-inch 4K monitor in a sound-attenuated room, and the EEG pipeline included average-mastoid referencing, bandpass and notch filtering, independent component analysis to strip out blinks and muscle artifacts, and spherical spline interpolation of noisy channels.

The behavioral results, modeled with mixed-effects Tobit regressions that accounted for the nested structure of repeated ratings within individuals, were striking. For self-consumption shoppers, customer reviews were the single most powerful driver of purchase intent, with five-star ratings carrying a coefficient of 1.44 against three stars, and all three sustainability badges significantly boosted intent, with the reduced-agrichemicals badge leading at 0.44. Price exerted a significant negative pull. Gift-givers were more selective: the climate-resilient badge dominated at 0.383, the reduced-agrichemicals badge followed at 0.270, and, notably, the disease-resistant badge lost its statistical significance entirely. A Wald test on the price-by-occasion interaction confirmed that gift-givers were significantly less price sensitive. Willingness-to-pay estimates, derived as the ratio of each attribute coefficient to the price coefficient, told the same story: the climate-resilient badge commanded a 48.2 percent premium in the gift condition, customer reviews a 20 percent premium, while the disease-resistant badge carried no significant premium at all among gift buyers.

The eye-tracking data painted a subtler picture. Fixations concentrated on the brand and badge regions across both conditions, and the presence of a badge visibly pulled attention toward itself, but differences between the two purchase occasions were modest. Self-consumers lingered slightly longer on the badge area, 500 milliseconds of total fixation versus 454 for gift-givers, and held their first fixation on customer reviews a bit longer, while gift-givers reached the non-GMO logo sooner and fixated it more often. Price attracted essentially identical visual attention in both groups. In other words, where people looked barely changed with the occasion; what changed was what happened next, inside the skull.

That is where the EEG results became decisive. In the self-consumption condition, all three badges significantly increased the amplitudes of the P100, an early marker of automatic visual attention peaking around 100 milliseconds; the P300, a mid-latency wave reflecting attentional allocation and working-memory updating; and the late positive potential, a sustained signature of conscious emotional and evaluative processing, while reducing the conflict-related N200 and the semantic-integration N400. In the gift-giving condition, the same badges produced even larger amplitudes across P100, P300, N400, and LPP, and scalp maps showed heightened neural activity in the gift group, especially in the later 600-to-2,000-millisecond window, consistent with deeper evaluative engagement. The climate-resilient badge stood out again: it produced the strongest P100 and P300 responses in gift-givers and the largest reductions in N200 and N400 among self-consumers, suggesting the message was processed with unusual fluency, perhaps because climate resilience is a broader and more familiar environmental concept than disease resistance.

Price told a fascinating double story. Behaviorally, gift-givers were less price sensitive, in line with the social-desirability dynamics of gift exchange, where the giver wants to signal generosity and care. But neurally, higher prices in the gift condition increased N200 and N400 amplitudes and decreased P300, a pattern the authors interpret as conflict monitoring and semantic dissonance: the brain registering tension between generosity norms and cost, between the desire to impress and the pain of paying. Customer reviews, by contrast, behaved like a cognitive heuristic rather than an emotional trigger; they dominated stated preferences and eased semantic integration in self-consumers, as shown by reduced N400, but left the emotional LPP largely untouched.

The authors are careful to frame their conclusions as preliminary and hypothesis-generating. Thirty-seven participants is a small sample by conventional standards, even if typical for EEG research; multiple comparisons across many ERP components and eye-tracking metrics raise the possibility of inflated false-positive risk; repeated exposure to the same labels may have induced habituation or fatigue; and the study included no direct manipulation check confirming how participants actually interpreted the disease-resistant badge, leaving open the possibility that some responses tracked the semantic salience of the word disease itself. The laboratory setting, a single fictitious label design, and hypothetical rather than incentive-compatible purchases further limit generalizability. Still, the practical implications are concrete: sustainability messaging, particularly the climate-resilient framing, consistently strengthened both behavioral and neural responses across occasions, and positioning unfamiliar sustainable wines as gifts may be an effective launch strategy, since gift-givers scrutinize messaging more carefully, pay more, and reward clear, interpretable environmental claims. Customer reviews emerged as a cheap, credible lever for reducing uncertainty around novel products. More broadly, the study demonstrates the payoff of multimodal consumer neuroscience: the eyes showed almost no difference between buying for oneself and buying for another, but the brain, measured in milliseconds, told a story of two fundamentally different acts of evaluation.

Subject of Research: Neural and attentional differences in consumer preferences for novel disease-resistant wines between gift-giving and self-consumption purchase occasions

Article Title: Consumer preferences for novel products: eye-tracking and EEG insights into gift-giving vs. self consumption

Article References: Parasuram, U., Yue, C., Gallardo, R. K., Steede, G., Eisenreich, B. R., & Clark, M. (2026). Consumer preferences for novel products: eye-tracking and EEG insights into gift-giving vs. self consumption. Frontiers in Behavioral Economics, 5, Article 1871704. https://doi.org/10.3389/frbhe.2026.1871704

Image Credits: AI Generated

DOI: 10.3389/frbhe.2026.1871704

Keywords: consumer neuroscience, EEG, eye-tracking, gift-giving, self-consumption, disease-resistant wine, sustainability badges, willingness to pay, event-related potentials, wine labels, conjoint analysis, behavioral economics

The research is grounded in the Theory of Planned Behavior, one of the most widely used frameworks in environmental psychology. Developed by Icek Ajzen, the theory holds that human actions are best predicted by three proximal factors: attitudes toward the behavior, subjective norms, which capture perceived social expectations, and perceived behavioral control, which reflects how easy or difficult a person believes the behavior to be. In this study, the authors extended the classic triad with three additional constructs: environmental knowledge, sources of information, and environmental behavior. The central question was whether these extensions could explain a financially consequential intention, namely the willingness to pay for sustainability, in a developing-country higher-education context where such evidence has been scarce.

Methodologically, the study is a cross-sectional quantitative investigation. Data were gathered from 440 students enrolled at three private universities in Dhaka using structured questionnaires. The analysis pipeline was unusually thorough for a behavioral survey of this kind. The researchers began with preliminary ordinal association tests to check for baseline relationships among variables, then moved to confirmatory factor analysis to verify that the survey items genuinely measured the intended constructs. The heart of the analysis was covariance-based structural equation modeling, a statistical technique that allows researchers to test an entire network of hypothesized cause-and-effect pathways simultaneously rather than one relationship at a time. Mediation analysis was then used to trace whether some variables influence willingness to pay indirectly through others.

Because self-reported survey data are vulnerable to artifacts, the team also ran a battery of validity diagnostics. These included an assessment of common method bias, the risk that correlations arise simply because all answers come from the same respondents at the same time; the HTMT ratio, a modern criterion for checking that conceptually distinct constructs are statistically distinguishable; a cross-loading examination to confirm that each survey item loads most strongly on its own factor; and a statistical power evaluation to ensure the sample size was adequate to detect the effects being tested. This layered approach matters, because findings in consumer behavior research are only as credible as the measurement and modeling safeguards behind them.

The results paint a coherent picture. Sources of information, meaning the channels through which students encounter environmental content, were positively associated with both environmental knowledge and environmental attitudes. In other words, students who are exposed to more and better sustainability information know more about environmental issues and feel more favorably toward pro-environmental action. This finding positions information channels as the upstream infrastructure of the entire psychological chain: before attitudes can form and intentions can crystallize, someone or something has to deliver the relevant knowledge.

Downstream, the study found that environmental behavior, subjective norms, attitudes, and perceived behavioral control all significantly predicted willingness to pay for sustainability. Each of these factors carried independent statistical weight. Students who already acted in environmentally responsible ways, who felt that people around them expected sustainable conduct, who held positive attitudes toward environmental protection, and who believed they had the capacity and opportunity to act sustainably were all more willing to spend money on sustainability. The fact that environmental behavior itself predicted willingness to pay suggests a self-reinforcing loop: practicing sustainability in daily life appears to build a disposition that extends to financial commitments.

The authors are careful about the limits of their model. They describe the extended Theory of Planned Behavior as a useful, though not perfectly fitting, explanation of sustainability-related financial intentions in their sample. This honesty is scientifically important. Behavioral models rarely capture every source of variance in human decisions, and a model that fits acceptably rather than perfectly still provides actionable leverage. In this case, the actionable levers are clear: improve the quality and reach of environmental information, cultivate positive attitudes through education, harness peer and social norms, and strengthen students’ sense of behavioral control.

The context of the study gives these findings particular weight. Bangladesh is one of the countries most exposed to climate change, facing sea-level rise, cyclones, flooding, and severe urban pollution, yet research on sustainability-related consumer psychology in its higher-education sector has been limited. Private university students in Dhaka represent a segment of the population with purchasing power and future leadership roles in business and policy. Understanding what drives their willingness to pay for sustainability therefore has implications far beyond campus boundaries. Prior studies cited in the paper have examined green fees on campuses, willingness to pay for green buildings, carbon offsets, and sustainable food, but context-specific evidence from developing-country universities has remained thin, a gap this study directly addresses.

The findings also connect to a broader international literature on environmental education. Research from Portugal, China, Indonesia, and elsewhere has repeatedly shown that environmental knowledge shapes attitudes, which in turn shape behavior, but the knowledge-action gap, the frequent disconnect between what people know and what they do, remains a persistent puzzle. By demonstrating that information sources feed both knowledge and attitudes, and that actual behavior feeds financial willingness, the Bangladeshi study suggests that interventions should target multiple points in the chain simultaneously rather than relying on knowledge alone. Sustainability curricula, campus campaigns, and media exposure may each contribute differently, and the study’s mediation framework offers a template for evaluating which pathways matter most in a given setting.

For policymakers and university administrators, the practical message is that willingness to pay for sustainability is buildable. It grows when students receive credible environmental information, when their social circles normalize sustainable choices, when their attitudes are shaped by engaging education, and when they experience the confidence that comes from acting sustainably in everyday life. For researchers, the study demonstrates that an extended Theory of Planned Behavior, validated with confirmatory factor analysis, structural equation modeling, and rigorous bias diagnostics, can travel successfully into a developing-country context and yield interpretable, actionable results. As universities worldwide grapple with how to finance greener campuses and as young consumers increasingly face sustainability-labeled choices in the marketplace, evidence about what makes students willing to pay, and what merely makes them nod in agreement, has never been more valuable.

Subject of Research: Determinants of university students' willingness to pay for sustainability in Bangladesh

Article Title: Determinants of students’ willingness to pay for sustainability in Bangladesh

Article References: Imran, S. A., Mahbub, S. B., & Weerasinghe, C. K. (2026). Determinants of students’ willingness to pay for sustainability in Bangladesh. SN Social Sciences, 6(10), Article 527. https://doi.org/10.1007/s43545-026-01825-7

Image Credits: AI Generated

DOI: 10.1007/s43545-026-01825-7

Keywords: willingness to pay, sustainability, Theory of Planned Behavior, environmental knowledge, environmental behavior, higher education, Bangladesh, consumer behavior, environmental attitudes, structural equation modeling, environmental education, subjective norms

The research team, led by Katherine Davies of the London School of Hygiene & Tropical Medicine together with colleagues including Katayi Mwila-Kazimbaya, Ian Ross, Elisabeth Tadiri, Jenala Chipungu and Robert Dreibelbis, designed a two-phase voucher-based randomised pricing experiment. The approach was deliberately crafted to move beyond the limitations of traditional surveys, in which people are simply asked how much they would be willing to pay for a good they have never used. Stated preference methods of that kind are notorious for producing inflated or unreliable estimates, because respondents have no real money at stake and no experience of the product in their daily lives. By contrast, this study let households live with the technology before asking them to buy it, and then confronted them with real purchase decisions at randomly assigned prices.

In the first phase, the researchers tested three different handwashing facilities with sixty households. Each household received two of the three designs to use for two weeks, with twenty households assigned to each possible combination. The three products spanned a wide range of cost and provenance. The most expensive was a pre-manufactured handwashing station retailing at 1,000 Zambian kwacha, roughly 38 US dollars. The cheapest was a low-cost pre-manufactured option at 100 kwacha, about 4 dollars. The third was a locally manufactured design known as the Kalingalinga bucket, a bucket fitted with a tap and mounted on a metal stand, priced at 250 kwacha or approximately 10 dollars.

When the trial period ended, the preferences were strikingly clear. Households overwhelmingly favoured the Kalingalinga bucket over both of the pre-manufactured alternatives, despite its mid-range price. The finding carries an important lesson for product designers and programme implementers: affordability alone does not determine whether a hygiene technology will be adopted. The locally made bucket evidently offered a combination of usability, durability, aesthetics and local familiarity that the imported designs could not match, even when those designs were either four times cheaper or four times more expensive. Local manufacture may also have played a role, since products made within the community can be easier to repair, replace and trust than mass-produced items from distant suppliers.

The second phase of the experiment focused entirely on the preferred design. A new sample of 160 households received a Kalingalinga bucket and used it for two weeks, giving them the same hands-on experience as the first cohort. At the end of the trial, each household was given a gift of 50 kwacha, worth about 2 dollars, and a randomly assigned discount voucher. The vouchers came in four levels: 20, 40, 60 or 80 percent off the retail price, with forty households in each group. This randomisation is the methodological heart of the study. Because the discounts were assigned by chance, any differences in purchasing behaviour across groups can be attributed to price rather than to pre-existing differences in wealth, motivation or enthusiasm for handwashing.

The results revealed a steep price sensitivity. Among the forty households offered an 80 percent discount, which reduced the effective price to zero, 98 percent chose to buy the facility, with 39 of 40 households making the purchase. At the other end of the spectrum, only 30 percent of households offered a 20 percent discount, corresponding to an effective price of 150 kwacha, decided to buy. In between, the purchase rates fell along a demand curve that the researchers used to build a predictive model. That model estimated that half of households would purchase the handwashing facility at an effective price of 103 kwacha, which corresponds to roughly 40 percent of the retail price. In other words, even for a product households had come to like through two weeks of use, the price needed to fall well below the market rate before a majority would commit.

Perhaps the most intriguing finding came from the households that declined to buy. Despite turning down the purchase offer, every non-purchasing household reported a positive stated willingness to pay when asked directly. The researchers interpret this as evidence of latent demand: households value handwashing facilities and would like to own one, but their ability to pay is constrained by the realities of household budgets in peri-urban Lusaka. The gap between what people say they would pay in the abstract and what they actually hand over in cash reflects not indifference but genuine financial hardship. This distinction matters enormously for policy, because it suggests that the barrier is affordability rather than a lack of perceived benefit.

The implications reach well beyond Zambia. Global efforts to achieve universal hand hygiene, embedded in the Sustainable Development Goals, have long recognised that access to a dedicated handwashing facility increases handwashing with soap, which in turn protects against respiratory infections and diarrheal disease, two of the leading causes of illness and death in young children worldwide. Yet programmes have often focused on supplying facilities through giveaways or on promoting behaviour change, while paying little attention to whether and how much end-users are able and willing to invest in the hardware themselves. This study is among the first to quantify that willingness with a randomised pricing design, and its message is sobering: market-based approaches that expect households to pay full retail price are unlikely to achieve anywhere near universal coverage.

At the same time, the study offers grounds for optimism. The strong preference for the locally manufactured Kalingalinga bucket suggests that well-designed, affordable products made close to the communities that use them can command real demand. The demand curve generated by the experiment provides concrete numbers that policymakers and programme designers can use to calibrate subsidies, voucher schemes, microfinance products or results-based financing. If half of households will buy at around 40 percent of the retail price, then a targeted subsidy of roughly 60 percent, or a financing mechanism that spreads payments over time, could dramatically expand coverage without the full cost of universal free distribution. The 50 kwacha gift given to all participants also demonstrated that modest cash transfers can lower the effective barrier to purchase.

The researchers are careful to note the boundaries of their evidence. The experiment took place in one peri-urban setting in Lusaka, and preferences and price sensitivity may differ in rural areas, in other countries, or for other product designs. The two-week trial period, while far more informative than a hypothetical survey, still cannot capture long-term durability, maintenance costs or sustained use over months and years. Nevertheless, the methodological template, combining free trials, randomised discounts and real purchase decisions, offers the hygiene sector a powerful new tool for testing not just whether people like a technology, but what they will actually sacrifice to own it. As governments and donors grapple with the enormous financing gap for hygiene, studies like this one make clear that closing it will require financial interventions that make desirable handwashing facilities genuinely affordable to the households that stand to benefit most.

Subject of Research: Household willingness to pay for handwashing facilities in peri-urban Lusaka, Zambia, measured through a randomised voucher-based pricing experiment

Article Title: How much are households willing to invest in hand hygiene enabling technologies? A randomised pricing experiment in Lusaka, Zambia

Article References: Davies, K., Mwila-Kazimbaya, K., Ross, I., Tadiri, E., Chipungu, J., & Dreibelbis, R. (2026). How much are households willing to invest in hand hygiene enabling technologies? A randomised pricing experiment in Lusaka, Zambia. PLOS Water, 5(8), e0000583. https://doi.org/10.1371/journal.pwat.0000583

Image Credits: AI Generated

DOI: 10.1371/journal.pwat.0000583

Keywords: hand hygiene, handwashing facilities, willingness to pay, randomised pricing experiment, Zambia, Lusaka, water sanitation and hygiene, vouchers, household investment, diarrheal disease prevention, respiratory disease prevention, PLOS Water

The service at the center of the study is EkoLakay, a container-based sanitation system operated in northern Haiti that provides households with a toilet that collects waste in sealed containers, which are swapped out weekly and transported to a treatment facility. In a country where sewer connections are rare and pit latrines often discharge untreated waste into the environment, container-based sanitation is one of the only household-level options that qualifies as safely managed sanitation under international definitions. The service currently costs 350 Haitian gourdes per month, a fee equivalent to less than three US dollars, yet even this modest amount proves prohibitive for some households. That gap between the cost of running the service and what the poorest families can afford is precisely where the question of targeted subsidies enters, and where the study makes its most consequential contribution.

To measure willingness to pay, the researchers used contingent valuation, a survey-based method in which respondents state whether they would pay a specified price for a good or service. It is a technique long used in environmental and development economics to attach values to things that lack market prices, and it requires careful design to avoid inflating or deflating responses. In this study, households were asked about their willingness to pay for EkoLakay service at different price points, and the resulting distribution tells a clear story. Sixty percent of surveyed households said they would pay the current fee of 350 gourdes per month. When the hypothetical price dropped to 250 gourdes, willingness to pay rose to 77 percent, and at 150 gourdes it reached 85 percent. In other words, demand for the service is high but highly price-sensitive, and each reduction in the monthly fee unlocks a substantial additional share of the population.

Those percentages translate directly into policy arithmetic. The authors calculate that a subsidy reducing the effective price to between 150 and 200 gourdes per month could push container-based sanitation coverage in the study area to as much as 80 percent of households. That is a striking figure for a city where safely managed sanitation coverage is otherwise minimal, and it suggests that relatively modest per-household transfers could produce large gains in public health protection. The economics hinge on the fact that the service already functions at scale; the constraint is not the technology or the collection logistics but the affordability of a recurring fee for households living close to the margin. Subsidy design, in this framing, becomes the central lever for expanding coverage rather than an afterthought.

Perhaps the most analytically interesting part of the study is its multivariate regression analysis, which examined which household characteristics were associated with willingness to pay. Three factors stood out: household wealth, the degree of privacy afforded by the household’s current sanitation arrangement, and satisfaction with that current facility. Wealthier households were more willing to pay, which is unsurprising but important, because it means that a uniform price will systematically exclude the poorest, reinforcing the case for targeted rather than universal subsidies. Households whose current toilets offered more privacy, and those who were dissatisfied with what they had, were also more willing to pay for the container-based service, indicating that the perceived quality and dignity of existing arrangements shape demand in measurable ways.

Just as revealing was what did not predict willingness to pay. Whether a household currently owned a private toilet showed no significant association with its willingness to pay for EkoLakay service. At first glance this seems paradoxical: why would families who already have a toilet pay for another one? The focus group discussions, conducted with household members and community leaders, supplied the answer. Participants described the hidden and recurring burdens of pit latrines, including the high cost of emptying a full pit, the persistent smell, and problems with pests. In dense urban neighborhoods where pits are difficult or impossible to empty safely, these costs can be substantial and unpredictable, making a flat monthly fee for a service that removes waste weekly genuinely attractive even to toilet owners.

The focus groups also surfaced contextual factors that a survey alone would have missed. Some participants expressed a desire for multiple toilets within the home, reflecting household sizes and living arrangements that a single facility cannot comfortably serve. Others pointed to the particular value of container-based sanitation in flood-prone areas, where pit latrines can overflow during heavy rains and contaminate yards, wells, and streets. Cap Haitien, like much of coastal Haiti, faces recurrent flooding that turns inadequate sanitation from a chronic nuisance into an acute hazard. In such settings, a sealed container that is removed before it fills offers a form of resilience that conventional on-site systems cannot match, and households appear to recognize and value that difference.

These findings matter well beyond northern Haiti. Container-based sanitation has attracted growing attention in the global sanitation sector as a service model for dense, low-income urban areas where sewers are infeasible and on-site systems fail to protect public health. Operators in Kenya, Ghana, Peru, and elsewhere face the same core dilemma as EkoLakay: the full cost of weekly collection and treatment cannot be recovered from the poorest customers at a price they can afford. The Cap Haitien study provides a template for how operators and governments can estimate the demand curve for such a service and identify the price point at which coverage expands most efficiently. It also demonstrates that willingness to pay is shaped by service attributes, such as privacy and flood resilience, that conventional subsidy formulas based purely on income may overlook.

The study’s implications for targeting are subtle. Because wealth predicts willingness to pay, subsidies aimed at the poorest households would reach those least able to pay the current fee, which is the standard logic of targeted transfers. But because satisfaction with existing sanitation and privacy also predict willingness to pay, a subsidy design that considers the quality of a household’s current facility, not just its income, could allocate resources more effectively. A family with a recently built, well-maintained private toilet may have less to gain from switching than a family using an unimproved shared latrine, even at similar income levels. Incorporating such indicators into eligibility criteria could stretch limited public budgets further, a consideration of acute importance in Haiti, where fiscal capacity is severely constrained and donor funding for water and sanitation is volatile.

The authors are careful to note the limits of what contingent valuation can establish. Stated willingness to pay is not the same as actual payment behavior, and hypothetical responses can diverge from what households do when a real bill arrives. Yet the consistency of the pattern across price points, the plausible direction of the regression results, and the corroborating qualitative evidence give the findings credibility, and the practical payoff is concrete: a quantified estimate that reducing the monthly fee to 150 to 200 gourdes could lift coverage to roughly 80 percent of households in the study area. For basic service providers and government partners in the region, that number converts an abstract debate about equity into a specific, costable policy choice. For the residents of Cap Haitien, it raises the prospect that a safe, dignified, and reliably collected toilet, one of the most fundamental determinants of urban health, could move within reach of the majority of families rather than a fortunate few.

Subject of Research: Willingness to pay for container-based sanitation services and targeted subsidy design in urban Haiti

Article Title: Willingness-to-pay for container-based sanitation and implications for targeted subsidy design in urban Haiti

Article References: Lubeck-Schricker, M., Bauza, V., Felix-Jean, W., Goddard, F. G., Pierre, M. F., Ozeris, B., Schelling, M., & Kramer, S. (2026). Willingness-to-pay for container-based sanitation and implications for targeted subsidy design in urban Haiti. PLOS Water, 5(9), e0000618. https://doi.org/10.1371/journal.pwat.0000618

Image Credits: AI Generated

DOI: 10.1371/journal.pwat.0000618

Keywords: container-based sanitation, willingness to pay, Haiti, Cap Haitien, sanitation subsidies, contingent valuation, EkoLakay, urban sanitation, PLOS Water, public health, pit latrines, flood resilience

The research, conducted by Rebecca Owusu and Kofi Atiah of the University of Cape Coast in Ghana together with Yacouba Kagambega of the Institut de l’Environnement et de Recherches Agricoles in Burkina Faso, addresses two intertwined problems. The first is agricultural: tomato farming in Ghana is plagued by substantial post-harvest losses, meaning that a large share of the crop that farmers work hard to grow never reaches consumers in usable form. The second is nutritional: micronutrient deficiencies remain a persistent public health concern across the country, particularly among populations whose diets lack diversity. Value-added processing of tomatoes into products such as juice, combined with fortification, has been proposed as a strategy that could tackle both problems at once—soaking up surplus harvest that would otherwise spoil while delivering concentrated nutrients to consumers.

Whether such a strategy can work, however, depends entirely on whether consumers accept the product, and that is where the study makes its contribution. The team employed a discrete choice experiment, a well-established method in agricultural and health economics that asks respondents to choose repeatedly between hypothetical product alternatives described by different combinations of attributes. By varying attributes such as the fortification ingredients, the presence of health claims, and whether the product carries certification, and by observing the trade-offs people make, researchers can statistically recover the implicit value that consumers place on each attribute. The approach transforms a subjective preference into a quantifiable economic measure expressed in Ghanaian cedis, the local currency.

The analytical machinery behind the study was correspondingly sophisticated. The authors estimated mixed logit models in what economists call preference space, an approach that allows each consumer’s tastes to differ from the average and thereby captures preference heterogeneity across the sample. They also estimated generalized multinomial logit models in willingness-to-pay space, a formulation that directly models the monetary value respondents attach to attributes and helps account for the scale of the random components in choice behavior. Estimating models in both spaces is a robustness strategy: if the substantive conclusions hold across specifications, researchers can be more confident that the results reflect genuine preferences rather than artifacts of a particular statistical assumption.

The headline result concerns certification. Consumers were willing to pay an additional 0.521 Ghanaian cedis for a certified product, and health claims on the packaging were also positively associated with consumer valuation. In other words, signals of quality assurance and official oversight made the juice more attractive and more valuable in shoppers’ eyes. This is a meaningful premium in a market where price sensitivity is high, and it underscores a broader principle in food economics: in settings where regulatory enforcement may be uneven and food safety concerns are real, third-party certification functions as a costly-to-fake signal of trustworthiness that consumers reward.

The fortification ingredients told a very different story. All three were associated with negative willingness to pay, meaning that adding them to the juice made consumers value it less. Turkey berry powder, soy milk, and powder derived from palm weevil larvae—the edible insect—each detracted from the product’s appeal. The pattern is notable because these ingredients were presumably selected for their nutritional merit; turkey berries are locally known and soy is a recognized protein source, while insect powder represents an emerging frontier in sustainable protein and micronutrient supply. Yet nutritional logic did not translate into market demand. The authors interpret this as evidence that trust-related attributes matter more for consumer acceptance than product formulation involving unfamiliar ingredients. A consumer who cannot judge whether an unusual ingredient is safe, palatable, or appropriate may simply discount the entire product.

This asymmetry between trust signals and ingredient content has practical consequences for anyone hoping to bring fortified foods to market in Ghana or similar contexts. The study suggests that the pathway to consumer acceptance may run through credibility rather than through the nutritional profile alone. A fortified juice carrying recognized certification and a credible health claim starts with a positive valuation that fortification then erodes; the net effect depends on whether the trust premium can outweigh the ingredient penalty. For product developers, the implication is that unfamiliar ingredients may need to be introduced gradually, paired with strong certification, or framed in ways that connect them to familiar food traditions, rather than simply listed on a label and expected to sell on merit.

The research also carries weight for the sustainable development agenda. The authors explicitly situate their work within the Sustainable Development Goals, particularly SDG 2 on zero hunger, SDG 8 on decent work and economic growth, and SDG 12 on responsible consumption and production. The logic of the connection is straightforward. If nutrition-sensitive food innovations can convert perishable surplus tomatoes into shelf-stable fortified products, farmers capture value that post-harvest losses currently destroy, food processors create employment, and consumers gain access to improved dietary quality. But the entire chain depends on the final link: a consumer willing to buy. Evidence that consumers penalize certain fortification ingredients is therefore not a rejection of the sustainable food systems vision but a map of where the friction lies.

The study was conducted with formal ethical oversight, receiving approval from the University of Cape Coast Institutional Review Board under approval number UCCIRB/CANS/2025/007, and was carried out in accordance with the Declaration of Helsinki. Respondents were informed of the study’s purpose, the confidentiality of their answers, and their right to withdraw at any time, with informed consent obtained before the questionnaire was administered. The authors report no competing interests and note that the research received no external funding. In an unusual touch, the acknowledgements credit a supervised student agribusiness project on consumer preferences for non-dairy ice cream in the Cape Coast Metropolis as the inspiration for the tomato juice study—a reminder that graduate training projects can seed publishable research agendas.

Published open access on 5 October 2026 after being received in April and accepted in late September of the same year, the article arrives as a citable early-release version carrying a permanent DOI. Its broader message resonates well beyond Ghana’s tomato sector. Around the world, food scientists are developing fortification strategies that incorporate novel and sustainable ingredients, from insect-derived proteins to plant-based powders, in the pursuit of diets that are both nutritious and environmentally sound. The Ghanaian evidence adds a cautionary but constructive data point: consumers are not blank slates who will adopt nutritionally superior products on command. They respond to trust, familiarity, and credible signals, and they punish unfamiliarity with their wallets. Designing sustainable food innovations that succeed in the market, the study implies, requires as much attention to the economics of belief as to the biochemistry of nutrition.

Subject of Research: Consumer willingness to pay for fortified tomato juice in Ghana

Article Title: Consumer willingness to pay for fortified tomato juice in Ghana and its relevance for sustainable food systems

Article References: Owusu, R., Kagambega, Y., & Atiah, K. (2026). Consumer willingness to pay for fortified tomato juice in Ghana and its relevance for sustainable food systems. Discover Sustainability. https://doi.org/10.1007/s43621-026-04888-x

Image Credits: AI Generated

DOI: 10.1007/s43621-026-04888-x

Keywords: food fortification, willingness to pay, discrete choice experiment, Ghana, tomato juice, post-harvest losses, sustainable food systems, micronutrient deficiency, edible insects, consumer preferences, SDGs, mixed logit

The research team, led by Charles Kwofie of the University of Energy and Natural Resources with colleagues from the University of Ghana and the University of Professional Studies, used a technique known as a discrete choice experiment to probe the preferences of 150 informal sector workers in the Accra Metropolis. Rather than simply asking people whether they would like a pension, the method presents respondents with pairs of hypothetical schemes that differ across several attributes and asks them to choose between each pair. Because every choice involves a trade-off, the researchers can recover the hidden weight that each worker places on individual scheme features, from the size of the contribution to the identity of the fund manager.

The intellectual foundations of the approach stretch back decades. Kevin Lancaster’s characteristics theory of value holds that consumers derive utility not from goods as whole bundles but from the attributes those goods possess, while Daniel McFadden’s random utility theory provides the statistical machinery for modelling choices made under uncertainty. In this framework, the utility a respondent assigns to any pension scheme is decomposed into an observable component driven by the attributes and an unobservable random component. The probability of choosing one scheme over another can then be estimated, in this case with a conditional logit model applied to an impressive 8,400 choice observations generated by 150 respondents each completing 28 binary choice sets.

The four attributes at the heart of the experiment were chosen through a rigorous three-stage process. A review of the informal pension and choice experiment literature identified candidate features known to drive demand, namely cost, benefit structure, payment flexibility and the identity of the scheme administrator. These were refined through consultation with two actuarial and pension specialists and a review of the design of the Social Security and National Insurance Trust’s third-tier Personal Pension Scheme, established under the National Pensions Act of 2008. Finally, a pilot with fifteen respondents from the target population confirmed that the wording was understood and the levels were realistic before the main survey began.

The headline findings are striking. Informal sector workers strongly prefer pension schemes managed by private trustees over those managed by government entities, with the aversion to government management amounting to roughly 53 percent of the utility swing associated with contribution affordability. They also want flexibility in how often they pay, reflecting the irregular and seasonal nature of informal incomes, and they favour affordable contributions over expensive ones. Perhaps most tellingly, the workers chose defined benefit plans over defined contribution plans, signalling that they value certainty about what they will eventually receive more than the prospect of higher but uncertain returns. The full preferred bundle corresponds to an estimated willingness to pay of about 31.43 Ghanaian cedis per member per month, or roughly 37.7 million cedis annually for every 100,000 enrolees.

The statistical evidence behind these conclusions is robust. The conditional logit model produced a chi-square statistic of 972.15 with a p-value at or below 0.001, and all four attributes were statistically significant. The sample size comfortably exceeded the minimum threshold of 55 respondents derived from standard stated-preference formulas, and the two-alternative design required at least 100 decision-makers in total, a bar the study cleared with room to spare. Ethical approval was obtained from the Committee for Human Research and Ethics of the University of Energy and Natural Resources, and all participants gave informed consent before data collection.

When the researchers disaggregated the results by gender, they found that men and women share the same ordering of preferences but differ in intensity. Female respondents, who made up 20 percent of the sample, were less sensitive to an expensive contribution amount than their male counterparts, with coefficients of negative 0.52 versus negative 1.02, suggesting that women are willing to commit a greater share of their income to a scheme they trust. Women also showed a stronger aversion to government fund managers and a stronger preference for defined benefits, indicating greater risk aversion and a higher value placed on benefit certainty. The authors caution, however, that the female estimates rest on only 30 respondents and should be read as indicative rather than conclusive, since women are widely reported to account for a large share of informal sector employment in Ghana.

Education told an equally revealing story. Respondents with no formal education, who constituted 51 percent of the sample, were the most sensitive to contribution costs, with a coefficient approaching negative 1.28, while sensitivity declined steadily among those with senior high school and tertiary education. A plausible explanation is that workers with lower educational attainment typically earn lower and less predictable incomes, so any given contribution represents a larger slice of their earnings. The least educated group also showed the strongest aversion to government-managed funds, at roughly negative 0.66 compared with about negative 0.29 among the tertiary educated, hinting that greater financial literacy softens distrust of public institutions. Even the most educated respondents, however, still preferred defined benefits, underscoring how central certainty is across the entire spectrum.

The practical implications for Ghana’s pension architecture are considerable. The third-tier scheme created under Act 766 already relies on licensed private trustees and pension fund managers, a structure that aligns closely with what informal workers say they want. The findings also support product designs built around mobile-money platforms that enable micro-contributions, several of which are being piloted across other African countries, since flexible payment schedules match the volatile cash flows of petty traders and artisans far better than rigid monthly instalments. A hybrid product combining affordable contributions with higher returns delivered with certainty emerges from the analysis as the ideal target, one that would also be financially sustainable for providers.

The study arrives at a politically charged moment. After the December 2024 general elections, Ghana’s governing party has intensively championed pension contributions among informal sector workers, and a proposed pension product for cocoa farmers, announced in the 2018 budget, has completed preparatory work but has yet to be implemented. By quantifying the specific attributes that drive willingness to contribute, the research offers SSNIT, the National Pensions Regulatory Authority, private trustees and fund managers actionable guidance on the scheme features most likely to attract enrolment. The authors also frame an agenda for future work, asking how preferences vary by income and location, whether specifying contributions directly in cedis would change the valuations, how funding and longevity risks can be reconciled with the demand for defined benefits, and whether behavioural factors such as trust, financial literacy and mobile-money convenience can be integrated into stated-preference models. For a sector where the majority of the workforce operates outside formal social protection, the answers could shape the retirement security of millions.

Subject of Research: Willingness to pay for pension contributions among informal sector workers in Ghana using a discrete choice experiment

Article Title: Using discrete choice experiment to investigate willingness to pay for pension contributions in the informal sector of Ghana

Article References: Kwofie, C., Nortey, E. N. N., Tetteh, B. N. A., & Kumi, W. (2026). Using discrete choice experiment to investigate willingness to pay for pension contributions in the informal sector of Ghana. Discover Global Society, 4(1), Article 229. https://doi.org/10.1007/s44282-026-00574-5

Image Credits: AI Generated

DOI: 10.1007/s44282-026-00574-5

Keywords: pension, informal sector, Ghana, discrete choice experiment, willingness to pay, conditional logit, SSNIT, defined benefit, fund managers, social protection, random utility theory, Accra