Integrative personality assessment in wild Assamese macaques (Macaca assamensis)

In nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. To draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to...

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Vydáno v:Journal of comparative psychology (Washington, D.C. : 1983) Ročník 134; číslo 1; s. 27
Hlavní autoři: Ebenau, Anja, von Borell, Christoph, Penke, Lars, Ostner, Julia, Schülke, Oliver
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 01.02.2020
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ISSN:1939-2087, 1939-2087
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Abstract In nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. To draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to the ecological pressures that promoted the evolution of behavior strategies. This study was conducted in the Phu Khieo Wildlife Sanctuary, Thailand, on 4 groups of habituated wild Assamese macaques by observers who had familiarized themselves with the subjects over the course of an ongoing long-term study. We used a multimethod approach enabling the most comprehensive understanding of variation in stable interindividual differences in a species-typical ecological setting. We combined trait ratings (TRs), assessed with observer-report questionnaires (54-item Hominoid Personality Questionnaire) of 107 individuals of diverse age-sex classes, with behavior codings (BCs) of 24 adult males. We found male and female personality constructs to be congruent and examined reliability and construct validity. Combining trait rating and behavioral coding, we found two solutions with five factors to best describe the personality structure of the males: one structure comprised the dimensions Gregariousness , Aggressiveness , Sociability and Vigilance , complemented by a Confidence domain and the other structure Opportunism , Confidence , Friendliness , Activity complemented with Vigiance . We discuss our findings with regard to the importance of construct validity and reproducibility in the context of method development and standardization in nonhuman animal personality research. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
AbstractList In nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. To draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to the ecological pressures that promoted the evolution of behavior strategies. This study was conducted in the Phu Khieo Wildlife Sanctuary, Thailand, on 4 groups of habituated wild Assamese macaques by observers who had familiarized themselves with the subjects over the course of an ongoing long-term study. We used a multimethod approach enabling the most comprehensive understanding of variation in stable interindividual differences in a species-typical ecological setting. We combined trait ratings (TRs), assessed with observer-report questionnaires (54-item Hominoid Personality Questionnaire) of 107 individuals of diverse age-sex classes, with behavior codings (BCs) of 24 adult males. We found male and female personality constructs to be congruent and examined reliability and construct validity. Combining trait rating and behavioral coding, we found two solutions with five factors to best describe the personality structure of the males: one structure comprised the dimensions GregariousnessBC, AggressivenessBC, SociabilityBC and VigilanceBC, complemented by a ConfidenceTR domain and the other structure OpportunismTR, ConfidenceTR, FriendlinessTR, ActivityTR complemented with VigianceBC. We discuss our findings with regard to the importance of construct validity and reproducibility in the context of method development and standardization in nonhuman animal personality research. (PsycINFO Database Record (c) 2020 APA, all rights reserved).In nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. To draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to the ecological pressures that promoted the evolution of behavior strategies. This study was conducted in the Phu Khieo Wildlife Sanctuary, Thailand, on 4 groups of habituated wild Assamese macaques by observers who had familiarized themselves with the subjects over the course of an ongoing long-term study. We used a multimethod approach enabling the most comprehensive understanding of variation in stable interindividual differences in a species-typical ecological setting. We combined trait ratings (TRs), assessed with observer-report questionnaires (54-item Hominoid Personality Questionnaire) of 107 individuals of diverse age-sex classes, with behavior codings (BCs) of 24 adult males. We found male and female personality constructs to be congruent and examined reliability and construct validity. Combining trait rating and behavioral coding, we found two solutions with five factors to best describe the personality structure of the males: one structure comprised the dimensions GregariousnessBC, AggressivenessBC, SociabilityBC and VigilanceBC, complemented by a ConfidenceTR domain and the other structure OpportunismTR, ConfidenceTR, FriendlinessTR, ActivityTR complemented with VigianceBC. We discuss our findings with regard to the importance of construct validity and reproducibility in the context of method development and standardization in nonhuman animal personality research. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
In nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. To draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to the ecological pressures that promoted the evolution of behavior strategies. This study was conducted in the Phu Khieo Wildlife Sanctuary, Thailand, on 4 groups of habituated wild Assamese macaques by observers who had familiarized themselves with the subjects over the course of an ongoing long-term study. We used a multimethod approach enabling the most comprehensive understanding of variation in stable interindividual differences in a species-typical ecological setting. We combined trait ratings (TRs), assessed with observer-report questionnaires (54-item Hominoid Personality Questionnaire) of 107 individuals of diverse age-sex classes, with behavior codings (BCs) of 24 adult males. We found male and female personality constructs to be congruent and examined reliability and construct validity. Combining trait rating and behavioral coding, we found two solutions with five factors to best describe the personality structure of the males: one structure comprised the dimensions Gregariousness , Aggressiveness , Sociability and Vigilance , complemented by a Confidence domain and the other structure Opportunism , Confidence , Friendliness , Activity complemented with Vigiance . We discuss our findings with regard to the importance of construct validity and reproducibility in the context of method development and standardization in nonhuman animal personality research. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
Author Schülke, Oliver
Ostner, Julia
Ebenau, Anja
Penke, Lars
von Borell, Christoph
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  organization: Department of Behavioral Ecology
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crossref_primary_10_1002_wll2_12022
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crossref_primary_10_3389_fpsyg_2020_584815
crossref_primary_10_1016_j_beproc_2023_104909
crossref_primary_10_1002_ajp_23229
crossref_primary_10_7717_peerj_12044
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SubjectTerms Animals
Animals, Wild
Behavior, Animal - physiology
Humans
Macaca
Male
Personality Assessment
Reproducibility of Results
Social Behavior
Surveys and Questionnaires
Thailand
Title Integrative personality assessment in wild Assamese macaques (Macaca assamensis)
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