A few misunderstandings about reciprocal altruism

Figures & data

Figure 1 Weighed average effect size of the effect of kinship on grooming, based on a meta-analysis of grooming distribution in 25 primate groups. The figure compares the effect of kinship on grooming when reciprocity is or is not controlled for. Data are from reference 3.

Schino G, Aureli F. The relative roles of kinship and reciprocity in explaining primate altruism. Ecol Letters 2010; 13:45 - 50

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