By Paul Bloom & Barbara L. Finlay (Editors)
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Chronobiology is the learn of timing mechanisms in organic platforms as varied as vegetation, animals and a few micro-organisms. It comprises rhythmic phenomena starting from brief interval (ultradian) via day-by-day (circadian) to lengthy interval (monthly, annual) cycles of behaviour, body structure and biochemistry.
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Extra resources for Behavioral and Brain Sciences, Volume 33, Issue 1, February 2010
Women who do choose to invest in their own human capital – beneficial in terms of increasing their ability to invest in their children – are less able to rely on a supportive kin network, as they disperse from their families and as their kin, particularly parents, become less able to provide practical support with grandchildren as they age. This results in an increase in the perceived costs of child-raising, necessitating a delay in reproduction until women are in a secure enough financial position to buy in help from non-kin.
For hunter-gatherer groups, labor income is food calories acquired (see Kaplan 1994; Howell, in press). org). This project estimates consumption, labor income, transfers, and asset-based economic activity by age for 30 countries around the world, with complete results currently available for about half of these. In the hunter-gatherer groups, adults continue to be net producers (negative LCD) until near time of death, transferring the surplus calories to younger group members, presumably mainly relatives.
Htm Abstract: Coall & Hertwig (C&H) give an ambitious review about the broad range of grandparenting literature from the perspective of different disciplines. They aim to show, how evolutionary theory, sociology, and economics can mutually enrich each other. However, the differences between the evolutionary and the socio-economic perspective should be more clearly pointed out, because they usually deal with different research questions. Grandparents’ well-being could be divided into its underlying components.