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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Common marmoset (Callithrix jacchus) personality
Author(s): Koski, Sonja E
Buchanan-Smith, Hannah M
Ash, Hayley
Burkart, Judith M
Bugnyar, Thomas
Weiss, Alexander
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Keywords: marmoset
cooperative breeding
Issue Date: Nov-2017
Citation: Koski SE, Buchanan-Smith HM, Ash H, Burkart JM, Bugnyar T & Weiss A (2017) Common marmoset (Callithrix jacchus) personality, Journal of Comparative Psychology, 131 (4), pp. 326-336.
Abstract: Increasing evidence suggests that personality structure differs between species, but the evolutionary reasons for this variation are not fully understood. We built on earlier research on New World monkeys to further elucidate the evolution of personality structure in primates. We therefore examined personality in 100 family-reared adult common marmosets (Callithrix jacchus) from three colonies on a 60-item questionnaire. Principal components analyses revealed five domains that were largely similar to those found in a previous study on captive, ex-pet, or formerly laboratory-housed marmosets that were housed in a sanctuary. The interrater reliabilities of domain scores were consistent with the interrater reliabilities of domain scores found in other species, including humans. Four domains---conscientiousness, agreeableness, inquisitiveness, and assertiveness---resembled personality domains identified in other nonhuman primates. The remaining domain, patience, was specific to common marmosets. We used linear models to test for sex and age differences in the personality domains. Males were lower than females in patience, and this difference was smaller in older marmosets. Older marmosets were lower in inquisitiveness. Finally, older males and younger females had higher scores in agreeableness than younger males and older females. These findings suggest that cooperative breeding may have promoted the evolution of social cognition and influenced the structure of marmoset prosocial personality characteristics.  
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Rights: ©American Psychological Association, 2017. Published in Journal of Comparative Psychology. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission. The final article is available, upon publication, at:

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