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Article

The Indirect Genetic Effect Interaction Coefficient ψ: Theoretically Essential and Empirically Neglected.

The Journal of heredity - 17 Feb 2022

Bailey Nathan W, Desjonquères Camille

Abstract excerpt

The interaction effect coefficient ψ has been a much-discussed, fundamental parameter of indirect genetic effect (IGE) models since its formal mathematical description in 1997. The coefficient simultaneously describes the form of changes in trait expression caused by genes in the social environment and predicts the evolutionary consequences of those IGEs. Here, we report a striking mismatch between theoretical...

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Identifiers

PMID: 34791332
DOI: 10.1093/jhered/esab056
PMCID: PMC8851666

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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