The purpose of this study was to identify personality characteristics
associated with kin altruism and reciprocal altruism, and to relate th
ose characteristics to the Big Five personality dimensions. We hypothe
sized that traits such as empathy and attachment mainly facilitate kin
altruism, and that traits such as forgiveness and non-retaliation mai
nly facilitate reciprocal altruism. Self-report items that we construc
ted to measure those kinds of personality traits defined two factors a
s hypothesized. Those factors correlated significantly with external c
riterion measures intended to represent kin altruism and reciprocal al
truism, respectively. Furthermore, correlations with adjective markers
of the Big Five indicated that the Empathy/Attachment factor was rela
ted positively to Agreeableness and negatively to Emotional Stability,
whereas the Forgiveness/Non-Retaliation factor Was related positively
to both Agreeableness and Emotional Stability, (C) 1998 Elsevier Scie
nce Inc.