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Unformatted text preview: sychological mechanisms that guide altruistic behavior enable perception of and response
to emotional closeness and mediate the effect of genetic relatedness on
altruism. These results provide a more complete understanding of how
ultimate and proximate causes work together to cause altruism.
Further elaboration of the mechanism by which genetic relatedness
affects altruism is important for the understanding of altruism. In the
present study, although emotional closeness accounted for a substantial portion of the effect of genetic relatedness on willingness to act altruistically, it did not account for all of the effect. We speculate that
much of the effect of genetic relatedness on altruism that is not explained by the effect of emotional closeness may be explained by
other mediators such as implicit and explicit societal rules that favor
kin over nonkin and close kin over more distant kin (e.g., Blau, 1964;
Petrinovich et al., 1993). Tests of models that include emotional closeness and other variables as possible mediators of the effect of genetic
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This document was uploaded on 11/18/2013.
- Fall '13