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<p>Chronic social stress is a widespread issue that jeopardizes social and personal well-being and ultimately compromises evolutionary fitness particularly in contexts where social instability and resource scarcity predominate. This essay presents the Gratitude-Stress Amelioration Hypothesis, which holds that gratitude developed as a context-dependent psychological mechanism for ameliorating the negative psychological and physiological impacts of acute and chronic social stressors, with differential adaptive functions depending on stress type and relational context. We contend that gratitude, by encouraging reciprocal altruism and strengthening social ties, acted as an adaptive response to resource unpredictability and social instability in ancestral environments. Our arguments are based on evolutionary theory, stress physiology, and social cognition. By encouraging collaboration, enlisting social support, and lessening the detrimental effects of ongoing stress on one’s health and social cohesiveness, this mechanism would have improved resilience. Furthermore, we suggest that gratitude functions via a variety of mechanisms, such as the facilitation of cognitive reappraisal of stressful events, the strengthening of alliance networks, and the modulation of stress-related neuroendocrine responses. However, we also acknowledge that the stress-buffering function of gratitude is constrained by boundary Accepted manuscript conditions, including power asymmetries, relational context, and the&#xa0;chronicity of stressors. This framework produces new, testable hypotheses&#xa0;for further investigation, such as the expectation that gratitude interventions will result in quantifiable decreases in stress biomarkers and increases in perceived social support in relationally mobile and low-power distance contexts. This theory provides a fresh perspective on the adaptive roles of prosocial emotions and their significance in maintaining psychological homeostasis in humans by fusing evolutionary viewpoints with empirical data on stress and gratitude.</p>

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The Gratitude-Stress Amelioration Hypothesis: An Evolved Mechanism for Social Homeostasis

  • 期刊论文

  • 发表日期：

    2026年1月23日

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  • Aakriti Agarwal,
  • Suantak Demkhosei Vaiphei,
  • Lienngailhing Khongsai

摘要

Chronic social stress is a widespread issue that jeopardizes social and personal well-being and ultimately compromises evolutionary fitness particularly in contexts where social instability and resource scarcity predominate. This essay presents the Gratitude-Stress Amelioration Hypothesis, which holds that gratitude developed as a context-dependent psychological mechanism for ameliorating the negative psychological and physiological impacts of acute and chronic social stressors, with differential adaptive functions depending on stress type and relational context. We contend that gratitude, by encouraging reciprocal altruism and strengthening social ties, acted as an adaptive response to resource unpredictability and social instability in ancestral environments. Our arguments are based on evolutionary theory, stress physiology, and social cognition. By encouraging collaboration, enlisting social support, and lessening the detrimental effects of ongoing stress on one’s health and social cohesiveness, this mechanism would have improved resilience. Furthermore, we suggest that gratitude functions via a variety of mechanisms, such as the facilitation of cognitive reappraisal of stressful events, the strengthening of alliance networks, and the modulation of stress-related neuroendocrine responses. However, we also acknowledge that the stress-buffering function of gratitude is constrained by boundary Accepted manuscript conditions, including power asymmetries, relational context, and the chronicity of stressors. This framework produces new, testable hypotheses for further investigation, such as the expectation that gratitude interventions will result in quantifiable decreases in stress biomarkers and increases in perceived social support in relationally mobile and low-power distance contexts. This theory provides a fresh perspective on the adaptive roles of prosocial emotions and their significance in maintaining psychological homeostasis in humans by fusing evolutionary viewpoints with empirical data on stress and gratitude.