Cross-Cultural and Cross-Organizational Evidence for an Evolved Hazing Motivation.

We report the first cross-cultural and cross-organizational evidence for an evolved hazing motivation. Using experiments performed in the United States, Japan, and among members of a hazing and a nonhazing organization, we demonstrate an invariant set of core hazing predictors. In particular, we show that the perception of near-term group benefits, which would have been ancestrally exploitable by new group members, substantially increases desired hazing severity in all samples.

Merely opting out of a public good is moralized: an error management approach to cooperation.

People regularly free ride on collective benefits, consuming them without contributing to their creation. In response, free riders are often moralized, becoming targets of negative moral judgments, anger, ostracism, or punishment. Moralization can change free riders' behavior (e.

On the Perception of Newcomers: Toward an Evolved Psychology of Intergenerational Coalitions.

Human coalitions frequently persist through multiple, overlapping membership generations, requiring new members to cooperate and coordinate with veteran members. Does the mind contain psychological adaptations for interacting within these intergenerational coalitions? In this paper, we examine whether the mind spontaneously treats newcomers as a motivationally privileged category. Newcomers-though capable of benefiting coalitions-may also impose considerable costs (e.

Exploring the evolved concept of NEWCOMER: experimental tests of a cognitive model.

Enduring human coalitions face the adaptive problem of integrating new members. Although newcomers can provide benefits (e.g.