By Paul Bloom & Barbara L. Finlay (Editors)
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Extra info for Behavioral and Brain Sciences, Volume 33, Issue 1, February 2010
In her opinion, parental biases in investments for this age group are unlikely in a relatively wealthy society such as the United States. That is, there are abundant resources available for parents to be able to make these early investments in all children regardless of sex. Evolutionary theory suggests that in such a situation of unusual abundance all children, irrespective of sex, will be highly valued and invested in by their parents. . [Status] attainment in American society requires much more than just investments in children as babies and adolescents; it requires ongoing investments in very lengthy periods of education and occupational training.
Understanding the nature of grandparental investment by means of knowledge of the evolved psychological mechanisms activated in the presence of grandparents, parents, and grandchildren will amplify research efforts and further inform public policy decisions. The evolutionary versus socio-economic view on grandparenthood: What are the grandparents’ underlying motivations? 1017/S0140525X09991713 Alexander Pashos Institute of Biology, Human Biology and Anthropology, Freie Universita¨t Berlin, 14195 Berlin, Germany.
Although grandchildren are related by one-quarter to grandparents, the latter are related to their nephews and nieces to the same degree, even though the reproductive value of grandchildren is likely to be higher. Secondly, another problem that needs to be methodologically addressed is what can be called indirect transfers or the problem of targeting (Hames 1987). Parents may be motivated to invest in their children because they know that such investments will be passed on to their grandchildren.