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Sex differences in longitudinal personality stability in chimpanzees

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, stabili...

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Autores principales: Rawlings, Bruce, Flynn, Emma, Freeman, Hani, Reamer, Lisa, Schapiro, Steven J, Lambeth, Susan, Kendal, Rachel L
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cambridge University Press 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10427468/
https://www.ncbi.nlm.nih.gov/pubmed/37588391
http://dx.doi.org/10.1017/ehs.2020.45
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author Rawlings, Bruce
Flynn, Emma
Freeman, Hani
Reamer, Lisa
Schapiro, Steven J
Lambeth, Susan
Kendal, Rachel L
author_facet Rawlings, Bruce
Flynn, Emma
Freeman, Hani
Reamer, Lisa
Schapiro, Steven J
Lambeth, Susan
Kendal, Rachel L
author_sort Rawlings, Bruce
collection PubMed
description 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.
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spelling pubmed-104274682023-08-16 Sex differences in longitudinal personality stability in chimpanzees Rawlings, Bruce Flynn, Emma Freeman, Hani Reamer, Lisa Schapiro, Steven J Lambeth, Susan Kendal, Rachel L Evol Hum Sci Research Article 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. Cambridge University Press 2020-09-09 /pmc/articles/PMC10427468/ /pubmed/37588391 http://dx.doi.org/10.1017/ehs.2020.45 Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Rawlings, Bruce
Flynn, Emma
Freeman, Hani
Reamer, Lisa
Schapiro, Steven J
Lambeth, Susan
Kendal, Rachel L
Sex differences in longitudinal personality stability in chimpanzees
title Sex differences in longitudinal personality stability in chimpanzees
title_full Sex differences in longitudinal personality stability in chimpanzees
title_fullStr Sex differences in longitudinal personality stability in chimpanzees
title_full_unstemmed Sex differences in longitudinal personality stability in chimpanzees
title_short Sex differences in longitudinal personality stability in chimpanzees
title_sort sex differences in longitudinal personality stability in chimpanzees
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10427468/
https://www.ncbi.nlm.nih.gov/pubmed/37588391
http://dx.doi.org/10.1017/ehs.2020.45
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