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Meta-analyses reveal support for the Social Intelligence Hypothesis. | LitMetric

Meta-analyses reveal support for the Social Intelligence Hypothesis.

Biol Rev Camb Philos Soc

Centre for Evolutionary Biology, University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia.

Published: October 2024

AI Article Synopsis

  • * A systematic review and meta-analysis of 103 studies found consistent support for the SIH across different species and contexts, including both social and cognitive measures.
  • * The findings indicate that the effect of the SIH on cognitive variation is robust, irrespective of differences in methodology, species taxonomy, or testing environments.

Article Abstract

The Social Intelligence Hypothesis (SIH) is one of the leading explanations for the evolution of cognition. Since its inception a vast body of literature investigating the predictions of the SIH has accumulated, using a variety of methodologies and species. However, the generalisability of the hypothesis remains unclear. To gain an understanding of the robustness of the SIH as an explanation for the evolution of cognition, we systematically searched the literature for studies investigating the predictions of the SIH. Accordingly, we compiled 103 studies with 584 effect sizes from 17 taxonomic orders. We present the results of four meta-analyses which reveal support for the SIH across interspecific, intraspecific and developmental studies. However, effect sizes did not differ significantly between the cognitive or sociality metrics used, taxonomy or testing conditions. Thus, support for the SIH is similar across studies using neuroanatomy and cognitive performance, those using broad categories of sociality, group size and social interactions, across taxonomic groups, and for tests conducted in captivity or the wild. Overall, our meta-analyses support the SIH as an evolutionary and developmental explanation for cognitive variation.

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Source
http://dx.doi.org/10.1111/brv.13103DOI Listing

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