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Author  |
Capitanio, J.P. |
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Title |
Personality dimensions in adult male rhesus macaques: prediction of behaviors across time and situation |
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Journal Article |
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Year |
1999 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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Volume |
47 |
Issue |
4 |
Pages |
299-320 |
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Keywords |
Animals; *Behavior, Animal; Forecasting; Macaca mulatta/*psychology; Male; *Personality; Psychometrics; Social Behavior |
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Abstract |
The idea that consistencies in behavior exist over time and across situations underlies human personality research. Although several studies have examined personality in nonhuman primates, there are very few data showing the predictive power of personality factors. The goal of the present study was to determine whether personality dimensions, identified in adult male rhesus monkeys living in half-acre cages, predicted behavior in situations different from the one from which the dimensions were originally derived and at time points of up to 4.5 years after the original assessments. Four personality dimensions (Sociability, Confidence, Excitability, and Equability) were identified using psychometric procedures and were correlated with behaviors recorded in several situations: the animals' natal groups, during tests of behavioral responsiveness while in individual cages, in small stable and unstable social groups, while viewing stimulus videotapes, and during stable social dyads. Results indicated substantial predictability. Sociability reflected a greater tendency to engage in affiliative interactions. Confidence correlated with more aggressive behaviors and with behaviors that suggest less attractiveness. Animals high in Excitability were somewhat inconsistent in their social behavior, perhaps reflecting hyper-responsiveness to novel circumstances and thwarted opportunities for escape. Equability appeared to be related to a less aggressive, more passive, style of interaction. Excitability and Equability appear to reflect more stylistic components of social behavior, whereas Sociability and Confidence may be more content-based dimensions. Sociability was strongly related to size of kin network in the animals' natal groups, suggesting an important role for ontogeny in this dimension. These data suggest that a limited number of personality dimensions exist in adult male rhesus macaques, and that these dimensions have predictive power that is both long-term and cross situational. |
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Department of Psychology and California Regional Primate Research Center, University of California, Davis 95616, USA. jpcapitanio@ucdavis.edu |
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0275-2565 |
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PMID:10206208 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4116 |
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Author |
Capitanio, J.P.; Widaman, K.F. |
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Title |
Confirmatory factor analysis of personality structure in adult male rhesus monkeys (Macaca mulatta) |
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Journal Article |
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Year |
2005 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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Volume |
65 |
Issue |
3 |
Pages |
289-294 |
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Keywords |
Animals; *Behavior, Animal; Macaca mulatta/*psychology; Male; *Personality; Psychometrics; Social Behavior |
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Abstract |
Reports from different laboratories have suggested that nonhuman primates have somewhat similar dimensions of personality. To date, however, no attempts have been made to statistically replicate a specific factor structure. In the present report, two independent observers recorded the behavior of 58 adult male rhesus monkeys, and then rated the animals with the use of a 50-item personality instrument. A confirmatory factor analysis (CFA) of the ratings resulted in the replication of a previously described four-factor personality structure [Maninger et al., American Journal of Primatology 61:73-83, 2003]. The first two dimensions-Sociability and Confidence-showed strong loadings and are similar to Affiliation and Agency dimensions in humans. The remaining dimensions-Equability and Irritability-were less clear, and it is possible that additional traits will have to be identified before a more robust structure can be established for these dimensions. |
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Address |
Department of Psychology, University of California-Davis, Davis, California 95616, USA. jpcapitanio@ucdavis.edu |
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0275-2565 |
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PMID:15772988 |
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Call Number |
Equine Behaviour @ team @ |
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4111 |
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Author |
Maninger, N.; Capitanio, J.P.; Mendoza, S.P.; Mason, W.A. |
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Title |
Personality influences tetanus-specific antibody response in adult male rhesus macaques after removal from natal group and housing relocation |
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Journal Article |
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Year |
2003 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
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61 |
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2 |
Pages |
73-83 |
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Keywords |
Analysis of Variance; Animals; Antibody Formation; Enzyme-Linked Immunosorbent Assay; Housing, Animal; Immunization, Secondary/*veterinary; Immunoglobulin G/blood; Macaca mulatta/*immunology/physiology; Male; *Personality; Social Behavior; Tetanus Toxoid/*immunology |
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Abstract |
Previous research has suggested that personality is related to immune function in macaques. Using a prospective design, we examined whether variation in the personality dimension “Sociability” in adult male rhesus macaques (Macaca mulatta) was related to the in vivo secondary antibody response to a tetanus toxoid booster immunization following removal from natal groups and relocation to individual housing. We also explored whether the timing of the immunization following relocation had an impact on the immune response. Blood was sampled at the time of booster immunization, at 14 and 28 days post-immunization, and approximately 9 months post-immunization. Plasma was assayed for tetanus-specific IgG by enzyme-linked immunoassay (ELISA). There was no difference between High- and Low-Sociable animals in antibody levels at the time of the booster immunization. Multivariate analysis of variance (MANOVA) revealed that High-Sociable animals had a significantly higher antibody response following relocation and immunization compared to Low-Sociable animals. There was no effect of timing of the immunization on the immune response. The results confirm that personality factors can affect animals' immune responses, and that the dimension Sociability may be influential in a male's response to social separation and relocation. |
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Department of Psychology, and Mind and Behavior Unit, California National Primate Research Center, University of California-Davis, Davis, California 95616, USA. nmaniger@ucdavis.edu |
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English |
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Abbreviated Series Title |
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ISSN |
0275-2565 |
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Notes |
PMID:14582129 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4114 |
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