Sex differences in longitudinal personality stability in chimpanzees.

Autor:	Rawlings B; Durham Cultural Evolution Research Centre, Department of Anthropology, Durham University, UK.; Department of Psychology, University of Texas at Austin, TX, USA.; National Center for Chimpanzee Care, Michale E. Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA., Flynn E; School of Psychology, Queen's University, Belfast, UK., Freeman H; National Center for Chimpanzee Care, Michale E. Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA., Reamer L; National Center for Chimpanzee Care, Michale E. Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA., Schapiro SJ; National Center for Chimpanzee Care, Michale E. Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA.; Department of Experimental Medicine, University of Copenhagen, Copenhagen, Denmark., Lambeth S; National Center for Chimpanzee Care, Michale E. Keeling Center for Comparative Medicine and Research, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA., Kendal RL; Durham Cultural Evolution Research Centre, Department of Anthropology, Durham University, UK.
Jazyk:	angličtina
Zdroj:	Evolutionary human sciences [Evol Hum Sci] 2020 Sep 09; Vol. 2, pp. e46. Date of Electronic Publication: 2020 Sep 09 (Print Publication: 2020).
DOI:	10.1017/ehs.2020.45
Abstrakt:	Personality factors analogous to the Big Five observed in humans are present in the great apes. However, few studies have examined the long-term stability of great ape personality, particularly using factor-based personality instruments. Here, we assessed overall group, and individual-level, stability of chimpanzee personality by collecting ratings for chimpanzees ( N = 50) and comparing them with ratings collected approximately 10 years previously, using the same personality scale. The overall mean scores of three of the six factors differed across the two time points. Sex differences in personality were also observed, with overall sex differences found for three traits, and males and females showing different trajectories for two further traits over the 10 year period. Regardless of sex, rank-order stability analysis revealed strong stability for dominance; individuals who were dominant at the first time point were also dominant 10 years later. The other personality factors exhibited poor to moderate rank-order stability, indicating that individuals were variable in their rank-position consistency over time. As many studies assessing chimpanzee cognition rely on personality data collected several years prior to testing, these data highlight the importance of collecting current personality data when correlating them with cognitive performance. Competing Interests: The authors declare no conflicts of interest. (© The Author(s) 2020.)
Databáze:	MEDLINE
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