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Genes, culture, and scientific racism.
Proc Natl Acad Sci U S A
November 2024
Department of Biology, Stanford University, Stanford, CA 94305.
Quantitative studies of cultural evolution and gene-culture coevolution (henceforth "CE" and "GCC") emerged in the 1970s, in the aftermath of the "race and intelligence quotient (IQ)" and "human sociobiology" debates, as a counter to extreme hereditarian positions. These studies incorporated cultural transmission and its interaction with genetics in contributing to patterns of human variation. Neither CE nor GCC results were consistent with racist claims of ubiquitous genetic differences between socially defined races.
View Article and Find Full Text PDFEvidence suggesting that reindeer mothers allonurse according to the direct reciprocity and generalized reciprocity decision rules.
PLoS One
December 2023
Natural Resources Institute Finland Luke, Reindeer Research Station, Kaamanen, Lapland, Finland.
Allonursing is the nursing of the offspring of other mothers. Cooperation is an emergent property of evolved decision rules. Cooperation can be explained by at least three evolved decision rules: 1) direct reciprocity, i.
View Article and Find Full Text PDFMother-to-daughter transmission of hygienic anti-parasite behaviour in mandrills.
Proc Biol Sci
February 2023
Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR5554 - University of Montpellier/CNRS/IRD/EPHE, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
Social animals are particularly exposed to infectious diseases. Pathogen-driven selection pressures have thus favoured the evolution of behavioural adaptations to decrease transmission risk such as the avoidance of contagious individuals. Yet, such strategies deprive individuals of valuable social interactions, generating a cost-benefit trade-off between pathogen avoidance and social opportunities.
View Article and Find Full Text PDFAuthor Correction: Adult sex ratios: causes of variation and implications for animal and human societies.
Commun Biol
December 2022
Milner Centre for Evolution, University of Bath, Bath, BA2 7AY, UK.
Adult sex ratios: causes of variation and implications for animal and human societies.
Commun Biol
November 2022
Milner Centre for Evolution, University of Bath, Bath, BA2 7AY, UK.
Converging lines of inquiry from across the social and biological sciences target the adult sex ratio (ASR; the proportion of males in the adult population) as a fundamental population-level determinant of behavior. The ASR, which indicates the relative number of potential mates to competitors in a population, frames the selective arena for competition, mate choice, and social interactions. Here we review a growing literature, focusing on methodological developments that sharpen knowledge of the demographic variables underlying ASR variation, experiments that enhance understanding of the consequences of ASR imbalance across societies, and phylogenetic analyses that provide novel insights into social evolution.
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