Not done Sir, but doing.

Plenty is doing.

"P.Draper and H.Harpending (e.g. 1982, J.Anthropol.Res.38) suggest that the developmental effects of {high or low parental involvement in child socialization} may affect mating and parenting behaviour in ways that are adaptive under the socio-ecological conditions that caused them in the first place. They offer the possibility that parent-reared children grow up to see that resources are scarce and require considerable effort, and that adults like this may view their own reproduction and parenting behaviors in the same light. This leads to a conservative, more "K-like" reproductive strategy, and parent-care societies thus show lower fertility than peer-care societies. On the other hand, children who spend more time in "child gangs" grow up to see that resources are not so scarce, or at least that they are more contingent on their "social skills", in the sense of being able to secure and maintain access to resources by establishing the "right" social, economic, and political connections with others (including advantageous marriages, which frequently produce many children who are valued both as laborers and as a sort of social, economic, and political debts with others). This leads to a less conservative, more "r-like" sort of reproductive strategy. J.B. and C.S.Lancaster (1987) offer a similar interpretation, but focus on resource predictability instead of peer- and parent-care per se. They suggest that in parent-care societies resources are seen as limited but predictable, and that reproductive output is scaled accordingly. In peer-care societies, however, resources are seen as less predictable because they are seen as less contingent on one's own efforts and more on the social milieu; with resources perceived as unpredictable, the optimum reproductive strategy may the "r-strategy" of maximum reproductive effort in hopes that some will survive."

James S. CHISHOLM, 1990, 'Life history perspectives on human development'. In G.Butterworth & P.Bryant, Causes of Development: Interdisciplinary Perspectives. New York : Harvester.

Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.