Hominid Brain Evolution: Testing Climatic, Ecological, and Social Competition Models
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This comparison among agricultural ant species provides insight into how increased group size and sociality in human populations may have reduced brain size.
“This latter comparison among agricultural ant species provides insight into how increased group size and sociality in human populations may have reduced brain size (Bailey and Geary, 2009) due to a high level of emergent complexity.”
From When and Why Did Human Brains Decrease in Size? A New Change-Point Analysis and Insights From Brain Evolution in Ants (2021) · cites this paper as Bailey and Geary, 2009
Collective intelligence may reduce brain size in both humans and ants.
“Collective intelligence may reduce brain size in both clades (Bailey and Geary, 2009;Feinerman and Traniello, 2016).”
From When and Why Did Human Brains Decrease in Size? A New Change-Point Analysis and Insights From Brain Evolution in Ants (2021) · cites this paper as Bailey and Geary, 2009
Group cognition lowered the demands for neural architectures required to support some aspects of individual intelligence and decision making.
“We suggest that group cognition lowered the demands for neural architechtures required to support some aspects of individual intelligence and decision making (Bailey and Geary, 2009).”
From When and Why Did Human Brains Decrease in Size? A New Change-Point Analysis and Insights From Brain Evolution in Ants (2021) · cites this paper as Bailey and Geary, 2009
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References 50 · Cited by 116
- Authors
- Bailey, D. H., & Geary, D. C.
- Affiliations
- University of Missouri (US)
- Corresponding author
- Geary, David C.
- Venue
- Human Nature
- Published
- 2009-01-10
- Volume
- 20
- Issue
- 1
- Pages
- 67-79
- ISSN
- 1045-6767 (ISSN-L)
- 1936-4776
- OpenAlex
- W1956999361
- Cited by
- 116
- References
- 50
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 4 · 2023: 8 · 2022: 7 · 2021: 10 · 2020: 10 · 2019: 3 · 2018: 4 · 2017: 7 · 2016: 8 · 2015: 6 · 2014: 9 · 2013: 7 · 2012: 7
- FWCI
- 39.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Human Nature (publishedVersion)
- Topics
- Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Evolutionary Psychology and Human Behavior
- Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
- Keywords
- hominid brain evolution, cranial capacity, brain size increase, Homo habilis, social competition, paleoclimate variability, temperature variation, population density, parasites, latitude
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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