A cross‐setting study of chimpanzee (Pan troglodytes) personality structure and development: zoological parks and Yerkes National Primate Research Center
- 30 March 2007
- journal article
- research article
- Published by Wiley in American Journal of Primatology
- Vol. 69 (11), 1264-1277
- https://doi.org/10.1002/ajp.20428
Abstract
This study addressed whether personality ratings using a 43 adjective questionnaire based on the Five‐Factor Model generalized from a sample of 202 zoo‐housed chimpanzees to a sample of 175 chimpanzees housed in Yerkes National Primate Research Center. Mean interrater reliabilities of adjectival ratings were lower for the chimpanzees housed in Yerkes. In addition, rank order of the interrater reliabilities of items differed between settings. To compare factor structure, we first examined whether we could replicate the original six factor structure found in an earlier study of 100 zoo chimpanzees using principal factors analysis in the Yerkes sample and 102 new zoo chimpanzees. The dominance, extraversion, conscientiousness, and agreeableness factors were clearly replicated in the Yerkes sample and the 102 new zoo chimpanzees. The Neuroticism and Openness factors did not replicate in the Yerkes sample, but they also did not replicate in the new zoo chimpanzees. These findings suggest the need to sample more adjectives representing neuroticism and openness in future versions of the questionnaire. We next sought to determine whether factor structure, as determined by principal components analysis, remained invariant across the two settings. This analysis revealed dominance, extraversion, conscientiousness, and agreeableness factors in both settings and a high level of congruence between the zoo and Yerkes samples for these factors. Finally, we tested whether factor scores in the two samples were similarly related to age and sex. With the exception of differences in age effects for dominance and agreeableness, age, and sex effects were consistent across samples. These findings suggest that, whereas there may be differences in the ease with which ratings are made, personality structure, and development are largely consistent across widely differing settings. Am. J. Primatol. 69:1264–1277, 2007.This publication has 29 references indexed in Scilit:
- Personality Plasticity After Age 30Personality and Social Psychology Bulletin, 2006
- Chimpanzee (Pan troglodytes) personality predicts behaviorJournal of Research in Personality, 2005
- Personality influences tetanus‐specific antibody response in adult male rhesus macaques after removal from natal group and housing relocationAmerican Journal of Primatology, 2003
- Development of personality in early and middle adulthood: Set like plaster or persistent change?Journal of Personality and Social Psychology, 2003
- Can chimpanzee (Pan troglodytes) happiness be estimated by human raters?Journal of Research in Personality, 2003
- The Five-Factor Model plus Dominance in Chimpanzee PersonalityJournal of Research in Personality, 1997
- Personality Structure: Emergence of the Five-Factor ModelAnnual Review of Psychology, 1990
- An alternative "description of personality": The Big-Five factor structure.Journal of Personality and Social Psychology, 1990
- Dominance relationships and ranks: Explanations, correlations, and empirical challengesBehavioral and Brain Sciences, 1981
- Intraclass correlations: Uses in assessing rater reliability.Psychological Bulletin, 1979