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原文連結
論文資訊
- 類型：已發表論文
- 日期：2014-03-26
摘要
Conflict with conspecifics from neighbouring groups over territory, mating opportunities and other resources is observed in many 社會 organisms, including humans. Here we investigate the 演化ary origins of 社會 instincts, as shaped by selection resulting from between-group conflict in the presence of a collective action problem. We focus on the effects of the differences between individuals on the 演化ary dynamics. Our theoretical models predict that high-rank individuals, who are able to usurp a disproportional share of resources in within-group interactions, will act seemingly altruistically in between-group conflict, expending more effort and often having lower reproductive success than their low-rank group-mates. Similar behaviour is expected for individuals with higher motivation, higher stre
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