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Unformatted text preview: ss, emotional closeness, and willingness to act altruistically,
was tested. Genetic relatedness was found to predict emotional closeness, B 3.86,
0.44, F(1, 28) 23.72, p .01; emotional closeness increased 3.86 points on the 7-point scale as a result of a 1-unit
increase in genetic relatedness. Emotional closeness predicted willingness to act altruistically, B 0.59,
0.63, F(1, 28) 84.15, p
.01. Moreover, the effect of genetic relatedness on willingness to
help, B 3.87,
0.46, F(1, 28) 33.70, p .01, though still statistically signiﬁcant, was less than it was in the unmediated model,
which did not control for emotional closeness. This reduction was statistically signiﬁcant by Sobel’s (1982) test, Z 4.902, p .001. The
mediating effect of emotional closeness accounted for approximately
33% (1.89/5.76) of the total effect of genetic relatedness on willingness to act altruistically. DISCUSSION
The present study is an attempt to integrate the ﬁndings of evolutionary and social psychology. Inclusive ﬁtness theory (Hamilton, RESULTS
Before the hyp...
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This document was uploaded on 11/18/2013.
- Fall '13