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Human foragers are obligately group-living, and their high dependence on mutual aid is believed to have characterized our species' social evolution. It was therefore a central adaptive problem for our ancestors to avoid damaging the willingness of other group members to render them assistance. Cognitively, this requires a predictive map of the degree to which others would devalue the individual based on each of various possible acts. With such a map, an individual can avoid socially costly behaviors by anticipating how much audience devaluation a potential action (e.g., stealing) would cause and weigh this against the action's direct payoff (e.g., acquiring). The shame system manifests all of the functional properties required to solve this adaptive problem, with the aversive intensity of shame encoding the social cost. Previous data from three Western(ized) societies indicated that the shame evoked when the individual anticipates committing various acts closely tracks the magnitude of devaluation expressed by audiences in response to those acts. Here we report data supporting the broader claim that shame is a basic part of human biology. We conducted an experiment among 899 participants in 15 small-scale communities scattered around the world. Despite widely varying languages, cultures, and subsistence modes, shame in each community closely tracked the devaluation of local audiences (mean r = +0.84). The fact that the same pattern is encountered in such mutually remote communities suggests that shame's match to audience devaluation is a design feature crafted by selection and not a product of cultural contact or convergent cultural evolution.

Spillover effect theory posits that work stressors can have spillover effects into workers' home lives. Although job insecurity spillover into the home domain has been explored extensively, potential spillback effects into the work domain have not. We posit that daily job insecurity represents a negative subjective perception that can spillover into the home domain and lead to insomnia, which will damage the recovery of self‐regulatory resources and make employees unable to regulate their own behavior, ultimately resulting in next‐day counterproductive work behavior. We hypothesized that self‐compassion, as an individual trait, weakens the spillover effect of job insecurity and moderates the indirect effect of job insecurity on next‐day counterproductive work behavior via insomnia. Our analyses of data collected from 132 full‐time employees across 10 consecutive working days showed that insomnia mediates the relationship between daily job insecurity and next‐day counterproductive work behavior, and further showed that this relationship was moderated by self‐compassion. Overall, our research captures the cascading effects of daily job insecurity and contributes to a more complete understanding of the spillover effect of job insecurity. [ABSTRACT FROM AUTHOR]