Sexual dimorphism in the human post-reproductive life-span: possible causes

Journal of Human Evolution • Vol/Iss. 9 • Published In 1980 • Pages: 227-232 •

By Gaulin, Steven J.C.

Abstract

This study tests possible explanations for sexual dimorphism in human post-reproductive life-spans. The author focuses on explanations involving male paternal investment and finds that men in agricultural societies are more likely to invest in their offspring than men in hunter-gatherer societies.

Samples
Sample Used	Coded Data	Comment
Standard Cross Cultural Sample (SCCS)	Other Researchers	Codes derived from Ethnographic Atlas

Hypotheses (2)
Hypothesis	Supported
Men in agricultural societies will be more likely to invest in their offspring (via inheritance) than men in hunter-gatherer societies (239).	Supported
Agricultural societies will have higher paternal certainty than hunter-gatherer societies (230).	Not Supported

Documents and Hypotheses Filed By: Kate Cummings Megan Farrer

Sexual dimorphism in the human post-reproductive life-span: possible causes

Journal of Human Evolution • Vol/Iss. 9 • Published In 1980 • Pages: 227-232 • Cite

By Gaulin, Steven J.C.

Abstract

Samples

Hypotheses (2)

Journal of Human Evolution • Vol/Iss. 9 • Published In 1980 • Pages: 227-232 •