Conducted by the São Paulo-based Center for the Study of Violence (NEV), a Research, Innovation, and Dissemination Center (RIDC) funded by FAPESP, the longitudinal study tracked 659 adolescents aged between 12 and 14 over three successive years. The comprehensive research employed a blend of psychometric assessments and neighborhood environment analyses to capture the dynamic trajectories of BJW— a construct describing the ingrained expectation that life operates on principles of fairness, where individuals ultimately receive outcomes commensurate with their actions. Published in the March 2025 issue of the Journal of Environmental Psychology, the article elucidates how this belief system falters in contexts marked by socio-structural deprivation.

BJW serves as a psychological cornerstone enabling individuals to maintain coherent expectations, adhere to social norms, and engage confidently in societal participation. Yet, as the study’s lead author, psychologist André Vilela Komatsu, explains, this conviction is not formed in isolation but intimately tied to concrete lived experiences within one’s physical and social milieu. The research uniquely isolates the influence of the material environment, positing that physical conditions independently sculpt adolescents’ sense of justice beyond interpersonal relational factors such as familial or institutional interactions.

This innovative perspective was developed through a collaborative partnership with the Max Planck Institute for Human Development’s Center for Environmental Neuroscience in Berlin, where co-author and neuroscientist Simone Kühn provides critical expertise. The integration of neuroscientific insight underscores the multidimensional nature of BJW’s formation, emphasizing that brain development and environmental stimuli interact complexly during adolescence to shape justice-related beliefs.

The empirical findings distinctly portray that adolescents from violent and neglected neighborhoods exhibit lower baseline levels of personal BJW and increasingly depart from this belief over time. This erosion of trust in justice profoundly influences core psychological parameters including motivation, self-esteem, and institutional trust. The diminished expectation of fairness in their own lives may precipitate adverse behaviors and psychological distress, signaling broader societal implications.

Conversely, the investigation identified that adolescents in more privileged and affluent neighborhoods demonstrate a comparatively higher personal BJW, notwithstanding their awareness of systemic social injustices. Komatsu highlights that even higher socioeconomic groups recognize pervasive inequities; however, their sheltered environments, replete with access to resources and opportunities, foster a protective buffer that sustains a personal confidence in the fairness of their own lived experience.

Crucially, this research advocates the significance of urban planning and structural interventions in shaping adolescents’ justice perceptions. Infrastructure quality, availability of public services, and cohesive communal relations emerge as pivotal factors that either erode or reinforce beliefs in equitable treatment. Komatsu articulates that the degradation of physical environments corresponds with psychological detriments and an erosion of civic trust, fundamentally undermining democratic values and inclusion.

Within these contexts, schools emerge as vital institutional agents capable of altering adolescents’ justice-related worldviews. Serving as primary spaces for social interaction and rule internalization, schools can either mitigate or exacerbate perceptions of unfairness. The study incorporated adolescents’ evaluations of their teachers’ fairness, particularly regarding consistent, transparent, and respectful rule enforcement, underscoring how pedagogic practices influence justice formation. In unequal urban settings, equitable schooling experiences may act as counterweights to neighborhood injustices, while discriminatory or punitive schooling practices deepen feelings of institutional untrustworthiness.

Although this particular study did not disaggregate BJW by gender or racial categories, antecedent research on the same cohort did reveal disparities aligning with societal structures of privilege. Youths identifying as white, male, enrolled in private schools, or from higher-income brackets exhibited elevated personal BJW, reflecting an internalized sense that the world is fairer toward them. These findings reiterate that belief systems about justice cannot be divorced from the broader matrix of systemic inequalities embedded within Brazilian society.

The role of social media as a contemporary influence on adolescents’ sense of justice also receives critical attention in this research. Komatsu elucidates how algorithm-driven content curation amplifies emotionally provocative and often ideologically skewed narratives. This digital environment frequently obscures systemic causes of injustice, instead promoting reductive and populist explanations that attribute social disparities to individual failings or group behaviors, thereby perpetuating stigmas and impeding nuanced understanding.

Despite the potential of social media platforms to cultivate social awareness and critical engagement, their propensity to favor sensationalism undermines balanced discourse. This media environment complicates adolescent access to rigorously contextualized and evidence-based interpretations of social inequalities, representing a modern barrier to cultivating a comprehensive and informed BJW.

Reflecting on potential remedies, the study emphasizes that targeted urban interventions—such as revitalizing public spaces like parks, cultural centers, and recreational facilities—can symbolically and materially assert communal worth and foster a renewed sense of justice among vulnerable youth. However, Komatsu stresses that these efforts must incorporate participatory processes, encouraging adolescents’ active agency and affirming their status as rights-bearing citizens to be truly effective.

Moreover, continuous investment in fundamental infrastructure encompassing lighting, sanitation, transportation, and healthcare is indispensable. Such investments materialize societal acknowledgement of often marginalized lives and communicate broader political commitments to equity, which may gradually rebuild fractured trust and justice perceptions among adolescents.

In synthesizing these findings, the article published under the DOI 10.1016/j.jenvp.2025.102582 articulates a sophisticated interplay between physical environment, social context, and psychological development. It compellingly challenges policymakers, educators, urban planners, and social scientists to recognize that justice is not merely a legal or philosophical construct but a lived experience profoundly mediated by the environments in which young people grow and learn.

As cities worldwide grapple with the twin challenges of inequality and social cohesion, this study offers critical evidence for adopting holistic strategies that intertwine environmental renewal with social justice objectives. Shaping the next generation’s belief in a just world is not solely a matter of moral education but fundamentally intertwined with the physical realities that frame their daily lives.

Subject of Research: Adolescents’ development of belief in a just world in relation to physical environment
Article Title: The effect of the physical environment on adolescents’ sense of justice
News Publication Date: 21-Mar-2025
Web References: https://www.sciencedirect.com/science/article/abs/pii/S0272494425000659
References: DOI: 10.1016/j.jenvp.2025.102582
Keywords: Adolescents, Behavioral psychology, Environmental issues

Belief in a just world (BJW) has long been a cornerstone concept in psychological research, encapsulating the idea that people fundamentally desire to see the world as a place where fairness prevails, outcomes correspond to actions, and moral desert is honored. This belief, while comforting and adaptive in many contexts, has been scrutinized for its role in victim blaming and perpetuation of social inequalities. Yet, Zhang and Zhang’s study challenges the monolithic view of BJW by dissecting the concept into subcomponents and specifically contrasting it against belief in just others (BJO), which pertains more narrowly to the expectation that other individuals adhere to fairness and moral rectitude in their actions.

The study underscores the critical distinction between these two constructs. While BJW represents a broader, more abstract worldview—a generalized expectancy that life is fair and just—BJO zeroes in on interpersonal beliefs, focusing on whether others in one’s social milieu can be trusted to act justly. This nuanced differentiation holds profound implications for social cognition, interpersonal relationships, and even collective societal attitudes. Zhang and Zhang meticulously explore how these beliefs operate independently yet interactively, influencing emotional well-being, coping mechanisms, and social dynamics.

Employing robust methodological frameworks, the researchers gathered extensive data across diverse demographic groups, utilizing psychometrically validated scales alongside innovative survey techniques. By deploying multivariate analyses and structural equation modeling, the study not only illuminated the distinct psychological profiles associated with each belief system but also mapped out their predictive power concerning key psychological and behavioral outcomes, such as resilience in the face of injustice, propensity toward social activism, and susceptibility to conspiracy ideation.

One compelling finding of the study was that belief in just others, more than a generalized BJW, correlates strongly with adaptive social behaviors and higher levels of interpersonal trust. Individuals endorsing high BJO scores demonstrated greater prosocial engagement and were less prone to cynical attributions about others’ motives. This suggests that fostering trust in others as just agents can be a crucial factor in building cohesive communities and mitigating social alienation, especially in increasingly polarized societies.

Conversely, the BJW construct was found to have a paradoxical relationship with coping. While adherence to a just world belief system can provide psychological comfort by offering a sense of order and meaning, it can also engender maladaptive responses, such as victim blaming or rationalization of systemic injustices. Zhang and Zhang’s data indicate that an overly rigid BJW may impair empathy and reduce motivation to challenge unfair practices, underscoring the complex moral and psychological trade-offs inherent in these beliefs.

Further dissecting the interaction between BJW and BJO, the researchers propose a dual-system framework that accounts for both abstract worldview maintenance and concrete social trust calibration. This model advances the psychological theory by elucidating how individuals navigate the tension between cognitive consistency and social experience, balancing an idealized notion of fairness with lived realities of human behavior. Such a framework has wide-ranging implications for interventions aimed at enhancing social trust and reducing intergroup conflict.

The study’s interdisciplinary approach integrates insights from social psychology, moral philosophy, and behavioral economics, lending it significant breadth and depth. Zhang and Zhang’s findings contribute to a burgeoning literature that seeks to refine our understanding of justice perceptions beyond simplistic dichotomies, fostering a more sophisticated appreciation of how individuals and societies interpret fairness and moral order.

Moreover, this research equips policymakers, educators, and social workers with empirical tools to address social fragmentation. By highlighting the distinct roles of BJW and BJO, the study invites a reevaluation of strategies designed to promote social justice awareness, mental health resilience, and community engagement. Enhancing belief in just others, for instance, might be a powerful lever to counteract disenchantment and foster cooperative behavior in diverse social settings.

The implications extend deeply into the realm of conflict resolution and reconciliation processes. Understanding the psychological underpinnings of justice beliefs enables practitioners to tailor interventions that not only affirm the need for fairness but also build trust among conflicting parties. Zhang and Zhang’s dual-system perspective advocates for initiatives that move beyond simply endorsing abstract principles to actively cultivating interpersonal trust networks.

A particularly innovative aspect of the research is its exploration of cultural variability in justice beliefs. The data reveal that social and cultural contexts significantly modulate the prominence and effects of BJW and BJO. In collectivist cultures, for example, belief in just others appears more strongly linked to social harmony and personal well-being, whereas in individualistic settings, BJW assumes a more dominant psychological role. This cross-cultural sensitivity enhances the study’s relevance in our globalized world, where understanding cultural nuances is paramount for effective social policy and psychological support.

From a neuroscientific vantage point, Zhang and Zhang’s inquiry invites further exploration into the cognitive and affective mechanisms that underpin justice beliefs. Emerging research suggests that areas of the brain involved in moral judgment, empathy, and reward processing are likely implicated in sustaining these belief systems. Future integration of neuroimaging methods could unravel how these mental constructs manifest biologically, possibly opening pathways for novel interventions targeting mental health disorders linked to justice-related cognitions.

The study also raises important questions about the evolution of justice beliefs in the context of digital media and information ecosystems. The rise of social networks, misinformation, and algorithm-driven echo chambers challenges traditional beliefs in fairness and trustworthiness of others. Zhang and Zhang hint at the necessity of examining how online environments reshape BJW and BJO, potentially exacerbating polarization or fostering new forms of solidarity.

In sum, Zhang and Zhang’s investigation offers a compelling and richly textured account of how humans navigate the complex terrain of justice beliefs. By parsing the differences and synergies between belief in a just world and belief in just others, the research provides a vital blueprint for academic inquiry, clinical practice, and social policy. The study not only advances theoretical understanding but also offers practical insights with the potential to strengthen social fabric in an era marked by uncertainty and division.

As societies grapple with questions of fairness amidst rising inequality and social upheaval, understanding the psychological foundations of justice perceptions becomes ever more critical. Zhang and Zhang’s work stands at the forefront of this endeavor, illuminating pathways that can foster greater empathy, trust, and collective resilience.

Subject of Research: Belief in a just world versus belief in just others and their psychological and social implications.

Article Title: Belief in a just world or belief in just others? A study on the object of belief in a just world.

Article References:

Zhang, X., Zhang, Y. Belief in a just world or belief in just others? a study on the object of belief in a just world. BMC Psychol 13, 564 (2025). https://doi.org/10.1186/s40359-025-02897-5

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The research explores the intriguing concept of vicarious exclusion, a facet of social rejection that extends beyond direct personal experience. Most previous research has focused predominantly on the consequences of directly being shunned or ostracized. However, Xiao and Wang’s study pivots the focus toward those who observe exclusion happening to others and investigates how these observations influence their own social behaviors. The findings suggest that witnessing exclusion can stir feelings of social threat, empathy fatigue, or even desensitization, thereby reducing the impetus to act kindly or helpfully in subsequent interactions.

Central to their investigation is the role of belief in a just world (BJW)—a psychological principle deeply rooted in the idea that people inherently desire to believe the world is fair and that individuals get what they deserve. BJW emerges in this study not merely as a passive worldview but as an active psychological resource. Individuals scoring higher on BJW scales appear more resistant to the potentially demoralizing effects of vicarious exclusion. These people maintain prosocial intentions even after observing exclusion, suggesting that their stronger faith in justice helps them preserve hope and engagement in social cooperation.

Conversely, the study outlines the vulnerabilities of individuals with a lower belief in a just world. These participants exhibited a marked reduction in prosocial behavior intention when confronted with vicarious exclusion. The emotional experience of watching another be excluded seemingly erodes their motivation to act altruistically, likely because their worldview lacks the compensatory optimism that fairness and justice ultimately govern social interactions. This nuanced psychological interplay highlights the importance of internal belief systems in shaping how we respond to the distress of others, even indirectly.

The implications of these insights stretch beyond laboratory settings. Understanding the social ripple effects of exclusion is pivotal in an era increasingly characterized by fractured communities and virtual interactions. Social media platforms that function as mass arenas for exclusionary behavior, such as cyberbullying and online ostracism, can have profound downstream effects on bystanders’ willingness to engage positively. Xiao and Wang’s findings underscore an urgent need to address not just victimhood but also the wider social ecology that includes observers who might be silently disengaging from prosocial participation.

A particularly striking element of the research is its methodological rigor. Through carefully designed experimental paradigms, the authors simulated scenarios in which participants either directly experienced exclusion, observed another’s exclusion, or experienced neither. The comparative data demonstrated a clear gradient of prosocial intention decline most profound in the vicarious exclusion group with low BJW. Such controlled conditions lend strong validity to the conclusion that the observed effects are indeed due to vicarious exclusion and interplay with belief systems rather than extraneous variables.

The study situates itself within a broader literature that interrogates social exclusion as a fundamental human stressor, but with novel emphasis on indirect experiences. Prior research had established direct exclusion as damaging to self-esteem, social motivation, and cooperation. Xiao and Wang extend this dialogue by confirming that witnessing exclusion is not benign; it wields its own psychological costs that can percolate through social networks. Accordingly, interventions aimed at fostering prosocial behavior need to consider the pervasive effects of observation alongside direct experience.

An important dimension explored is the psychological buffering power of belief in a just world. This construct has been extensively studied in contexts of victim blaming and coping mechanisms. Here, it is reframed as a resilience factor that sustains prosocial tendencies despite exposure to negative social dynamics. Individuals high in BJW seem to maintain a belief in eventual fairness and social order, which preserves their willingness to help others rather than withdraw in cynicism or apathy.

Furthermore, the findings contribute to the ongoing discourse on the emotional and cognitive consequences of social observation. The study implies that witnessing exclusion might trigger emotional processes—such as distress or moral outrage—that in turn influence behavioral intentions. Yet, whether the reduced prosocial intention reflects emotional exhaustion, decreased social trust, or altered cognitive appraisals remains an open question for future inquiry.

Xiao and Wang’s results also have potential applications in organizational and educational settings, where exclusionary dynamics frequently play out in subtle, indirect ways. Efforts to promote inclusive cultures might be enriched by recognizing that bystanders to exclusion can become demotivated or withdrawn from prosocial engagement. Fostering environments where belief in fairness is nurtured could serve as a protective factor, encouraging sustained cooperation and social support systems.

Moreover, the study opens avenues for innovative psychological interventions. Mental health practitioners and social workers could incorporate elements that strengthen BJW, or at least reframe individuals’ perceptions of justice, as a method to mitigate the corrosive social effects of exclusion. This could be especially beneficial in vulnerable populations who are frequently exposed to vicarious social injustice, such as marginalized communities or those immersed in hostile social media ecosystems.

The authors also highlight cultural considerations, calling for cross-cultural replication to examine how BJW might function differently across diverse societies. Since perceptions of justice and fairness vary widely among cultures, the buffering effects observed might be moderated by cultural norms, values, and societal structures. Such research would deepen the understanding of universal versus culture-specific processes in social psychology.

Technically, the study employs a blend of psychometric assessments and behavioral intention measures, carefully validated to parse out the subtle gradations of social cognition involved. This multi-method approach enhances confidence in the robustness of the findings and their applicability to real-world social phenomena. The use of large sample sizes ensures statistical power, while the experimental design allows causal inference rather than mere correlation.

In the context of global social challenges such as rising loneliness, polarization, and social fragmentation, Xiao and Wang’s insights provide a crucial prism through which to view the psychological barriers to collective goodwill. The results caution against overlooking the silent disengagement of those indirectly exposed to exclusion and invite broader societal efforts to cultivate belief in fairness as a resource for social cohesion.

Finally, this pioneering research underscores a shift in social psychology toward recognizing the complexity of human social experience—not only how we are affected by direct interactions but how the social fabric is woven through observation and belief. As society grapples with new forms of social connection and exclusion, the nuanced understanding of vicarious exclusion and belief in a just world offered here will likely inform both theoretical models and practical interventions aimed at fostering prosocial behavior and resilient communities.

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Subject of Research: The impact of vicarious social exclusion on prosocial behavioral intentions and the moderating role of belief in a just world.

Article Title: The influence of vicarious exclusion on prosocial behavioral intentions and the role of belief in a just world.

Article References:

Xiao, X., Wang, Y. The influence of vicarious exclusion on prosocial behavioral intentions and the role of belief in a just world.
Humanit Soc Sci Commun 12, 543 (2025). https://doi.org/10.1057/s41599-025-04829-5

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