Leaders can launch hostile attacks on out-groups and organize in-group defence. Whether
groups settle the conflict in their favour depends, however, on whether followers align with …

Parochial altruism, taking individual costs to benefit the in-group and harm the out-group,
has been proposed as one of the mechanisms underlying the human ability of large-scale …

In this review, we propose that the social dynamics of founder populations in novel and
newly available environments can have critical effects in shaping species' sociality and can …

Accumulating evidence suggests that the phenotypes of human males were shaped by
contest competition, the mode of sexual selection in which mating opportunities are obtained …

As an emergency, food insecurity threatens people's well-being, while social capital is
expected to enhance their resilience in this situation. This study examined the relationship …

In a number of species, including humans, perceived outgroup threat can promote ingroup
cohesion. However, the distribution and selection history of this association across species …

Oxytocin has attracted research attention due to its role in promoting social bonding. In
bonobos and chimpanzees, the two species most closely related to humans, urinary …

Highlights•Humans engage in a wide range of group-level cooperation and competition.•We
investigate the evolution of group cooperation and its underlying group-mindedness.•We …

The oxytocinergic system has been suggested to make up an important part of the endocrine
basis of group cohesion. However, controlled studies in open-group settings have not been …

在中国提出构建人类命运共同体的全球背景下, 从心理学的视角探讨全人类认同对亲社会心理和
行为的影响及其解释机制至关重要. 全人类认同指将全体人类视为内群体 …