Proceedings of the 2nd International Congress of Anthropology of the HAA “Human Evolution and Population Bio-Diversity in SE-Europe” held in Athens, Areopolis and Sparta – Greece, June 5-10, 2006 KIN INVESTMENT BIASES OF GRANDPARENTS, AUNTS AND UNCLES IN GERMANY, GREECE AND THE USA: EVOLUTIONARY INTERPRETATIONS OF DIFFERENT KIN CAREGIVING BEHAVIOR ALEXANDER PASHOS Freie Universität Berlin Humanbiologie und Anthropologie Albrecht-Thaer-Weg 6 14195 Berlin e-mail: pashos@zedat.fu-berlin.de