Synonym
Definition
Grandparental investment refers to the various types of care (like solicitude, looking after grandchildren, getting in contact, investing time, and tangible resources) grandparents may provide for their grandoffspring.
Introduction
Evolutionary psychologists assume that grandparenthood is not only a social role (Kahana and Kahana 1971) but has profound implications for reproductive success (Voland et al. 2005). From birth on, children are highly dependable on their parents and require a great amount of parental investment (Trivers 1972). According to the cooperative breeding hypothesis, substantial child care is provided by helpers other than the biological parents (alloparents; Hrdy 1999). In the EEA (environment of evolutionary adaptedness), two parents would not have been enough to rear highly dependent human children for many years until they have reached adulthood. Humans are therefore characterized by a network of family helpers....
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Schwarz, S., Pashos, A., Euler, H.A. (2016). Grandparental Investment. In: Weekes-Shackelford, V., Shackelford, T., Weekes-Shackelford, V. (eds) Encyclopedia of Evolutionary Psychological Science. Springer, Cham. https://doi.org/10.1007/978-3-319-16999-6_1182-1
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