Degrowth Messages Shift Values but Green Growth Wins Policy Support, Experiments Show

How do you persuade people to embrace an economic philosophy that asks them to want less? It is one of the most awkward questions in climate communication, and a new pair of large-scale online experiments suggests that the answer is more uncomfortable than either advocates or skeptics might expect. The research, published in PLOS Sustainability and Transformation, tested how messages framed around degrowth and green growth shaped the intentions, values, and behaviors of nearly two thousand British millennials, and it arrived at a finding that cuts against the grain of much activist thinking: degrowth framing, for all its intellectual appeal, may leave individuals cold, while green growth messaging builds broader support for environmental policy.

Degrowth has moved steadily from the margins of ecological economics toward the center of scholarly debate over the past decade. At its core, the idea is a deliberate downscaling of production and consumption in affluent societies, paired with the promise that a good life for all remains possible within planetary boundaries. Crucially, degrowth envisions this contraction not as imposed austerity but as collectively defined self-limitation, a society choosing sufficiency over excess. Green growth, by contrast, is the dominant policy orthodoxy: the proposition that economies can keep expanding while decoupling prosperity from environmental harm through technology, efficiency, and markets. The two visions imply very different appeals to individuals, and that difference is precisely what the new research set out to measure.

The study, conducted by Dallas O’Dell, Frédéric Basso, and Ganga Shreedhar, addressed a gap that has persisted even as degrowth scholarship has flourished. Little empirical work has examined which communication and framing techniques can translate the agenda’s system-level focus into individual consumption decisions and self-limitation practices. Equally neglected, the authors note, is the role of the messenger: whether commercial or non-commercial voices are better positioned to promote sufficiency or to advance the degrowth cause. The team ran two online experiments with U.K. millennial respondents, the first with 969 participants and the second with 933, followed by regression analyses to probe the relationships between exposure, values, and stated or revealed choices.

Study 1 focused on what the researchers call sufficiency-promoting marketing, or SPM, messages. These are communications that borrow the tools of commercial marketing to encourage people to consume less, and the experiment compared versions expressing self-orientation without limits, corresponding to a green growth logic, against versions expressing self-orientation with limits, corresponding to degrowth. The comparison uncovered little difference in consumption attitudes and behaviors between the two conditions. In other words, when sufficiency was packaged as a marketing pitch aimed at the individual, whether or not it carried an explicit message of limits made almost no measurable difference to how respondents thought or acted.

That null result carries a sharper implication than it might first appear. The authors conclude that sufficiency-promoting marketing appeared ineffective at making degrowth values relevant to individuals or at promoting widespread self-limitation, which renders the approach incompatible with any genuine degrowth agenda. The paradox is structural: marketing, by its nature, addresses individuals as self-interested consumers, while degrowth asks people to think collectively and to accept limits on consumption itself. A message that invites people to buy into buying less, framed in the persuasive vocabulary of commerce, seems to dissolve the very idea of collective self-limitation it is meant to convey.

Study 2 shifted the terrain from the marketplace to the civic sphere. Here the researchers tested whether communications framed around degrowth or green growth, delivered by a non-commercial messenger, affected civic-oriented values and policy support for collective limitations. The results diverged in an instructive way. Green growth framing garnered higher support for environmental policy, suggesting that its familiar promise of prosperity without sacrifice remains the more effective route to building a political coalition. Degrowth framing, meanwhile, increased the likelihood that respondents would choose degrowth or a-growth positions when asked to take a stance in the growth-versus-environment debate.

Read together, the two studies sketch a division of labor that degrowth advocates may find bittersweet. Degrowth framing, the authors write, inspires values, while green growth spurs policy support. The vocabulary of limits and downscaling can shift where people stand in the abstract debate about economic growth, nudging them toward post-growth or agnostic positions on the question itself. But when the outcome that matters is concrete backing for environmental policy, the green growth frame outperforms it. The message that resonates philosophically is not the message that mobilizes politically, at least not in the forms tested here.

The research also flags a potentially counterproductive psychological dynamic. Degrowth messaging that concentrates on system-level problems and on solutions based on reductions may disengage individuals from mobilizing for societal change. This is a familiar pattern from the broader literature on climate communication: framing problems at scales too large for individual agency, or defining solutions primarily in terms of what people must give up, can produce resignation rather than resolve. For a movement whose central demand is collective self-limitation, the finding poses a genuine strategic dilemma, since the system-level framing that gives degrowth its coherence may be the same framing that leaves potential supporters passive.

The authors present these results as exposing the paradoxical nature of sufficiency-promoting marketing while also revealing psychological implications of degrowth messaging that can guide advocates developing communication strategies in non-commercial contexts. The practical takeaway is not that degrowth communication is futile, but that its current forms may be mismatched to the outcomes advocates seek. If the goal is value change and a repositioning of the public in the growth debate, degrowth framing has demonstrable traction. If the goal is policy support, the evidence favors green growth’s more familiar promise. Messengers, too, matter: the experiments suggest that non-commercial voices are the appropriate channel for testing these frames, since commercial messengers promoting sufficiency appear to undermine the message they carry.

For a field that has often argued about degrowth in theoretical terms, the study offers something rarer: experimental evidence about how real respondents actually respond. With samples approaching a thousand participants in each study, the findings carry weight beyond anecdote, and they complicate a simple narrative in which the right words could unlock public enthusiasm for downscaling. Translating system-level change to individuals, it turns out, is not a matter of finding the perfect slogan. The frames that make people rethink growth are not the frames that make them back policy, and the marketing toolkit that works for selling products may be structurally incapable of selling sufficiency. As debates over post-growth economics intensify, both advocates and critics now have empirical ground to stand on, and it suggests the path from ecological philosophy to political mobilization is narrower and more winding than either side has assumed.

Subject of Research: Experimental comparison of degrowth and green growth message framing effects on sustainability values, behavior, and policy support

Article Title: Translating system-level change to individuals: Experimental evidence on avenues to communicate about degrowth and green growth

Article References: O’Dell, D., Basso, F., & Shreedhar, G. (2026). Translating system-level change to individuals: Experimental evidence on avenues to communicate about degrowth and green growth. PLOS Sustainability and Transformation, 5(5), e0000245. https://doi.org/10.1371/journal.pstr.0000245

Image Credits: AI Generated

DOI: 10.1371/journal.pstr.0000245

Keywords: degrowth, green growth, climate communication, sufficiency, message framing, environmental policy, consumer behavior, self-limitation, sustainability, online experiments, U.K. millennials, PLOS