Journal
INTELLIGENCE
Volume 50, Issue -, Pages 159-163Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.intell.2015.04.002
Keywords
General intelligence; Primate intelligence; Heritability; CVA; Chimpanzee
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Funding
- NIH [NS-42867, NS-73134, HD-60563]
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Expanding on a recent study that identified a heritable general intelligence factor (g) among individual chimpanzees from a battery of cognitive tasks, we hypothesized that the more g-loaded cognitive abilities would also be more heritable in addition to presenting greater additive genetic variance and interindividual phenotypic variability. This pattern was confirmed with multiple analytical approaches, and is comparable to that found in humans, indicating fundamental homology. Finally, tool use presented the highest heritability, the largest amount of additive genetic variance and phenotypic variance, consistent with previous findings from comparative primate studies indicating that it is associated with high interspecies variance and has evolved rapidly. (C) 2015 Elsevier Inc. All rights reserved.
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