title: The moreg-loaded, the more heritable, evolvable, and phenotypically variable: Homology with humans in chimpanzee cognitive abilities.
abstract: 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 cognitive abilities that are moreg-loaded would be more heritable and would present more additive genetic variance, in addition to showing more phenotypic variability. This pattern was confirmed, 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 of phenotypic variance, consistent with previous findings indicating that it is associated with high interspecies variance and evolutionary rates in comparative primate studies.
authors.affiliation: Center Leo Apostel for Interdisciplinary Studies, Vrije Universiteit Brussel, 1050 Brussels, Belgium.|Department of Psychology, Technische Universität Chemnitz, 09126 Chemnitz, Germany.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Woodley Of Menie
authors.affiliation: Departments of Psychology and Genetics, Federal University of Rio Grande do Sul,90035-003 Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Heitor B F
authors.initials: HBF
authors.lastname: Fernandes
authors.affiliation: Neuroscience Institute and Language Research Center, Georgia State University, Atlanta, Georgia 30302, USA.|Division of Developmental and Cognitive Neuroscience, Yerkes National Primate Research Center, Atlanta, Georgia 30322, USA.
authors.forename: William D
authors.initials: WD
authors.lastname: Hopkins
keywords: CVA; chimpanzee; general intelligence; heritability; primate intelligence