Journal article
A model explaining the matrilateral bias in alloparental investment
Abstract
Maternal grandmothers invest more in childcare than paternal grandmothers. This bias is large where the expression of preferences is unconstrained by residential and lineage norms, and is detectable even where marriage removes women from their natal families. We maintain that the standard evolutionary explanation, paternity uncertainty, is incomplete, and present an expanded model incorporating effects of alloparents on the mother as well as on …
Authors
Perry G; Daly M
Journal
Proceedings of the National Academy of Sciences of the United States of America, Vol. 114, No. 35, pp. 9290–9295
Publisher
Proceedings of the National Academy of Sciences
Publication Date
August 29, 2017
DOI
10.1073/pnas.1705910114
ISSN
0027-8424