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McGrogan, C.; Hutchison, M.D.; King, J.E. |
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Dimensions of horse personality based on owner and trainer supplied personality traits |
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2008 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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113 |
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1 |
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206-214 |
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Keywords |
Horse; Personality; Domestication; Five-factor model |
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Abstract |
Ratings on 36 personality descriptive adjectives were made on 100 companion horses by owners, trainers, and stable managers. The descriptors had been previously provided by a subset of 30 raters based on their own experience with horses. Principal components analysis revealed three statistically significant factors accounting for 59% of the variance. The first was a large, complex factor resembling the human Agreeableness factor. This factor contained four clusters of items reflecting obedience, kindness, sociality, and non-aggressiveness. The second factor resembled human Extraversion, although it also contained items reflecting intellect and curiosity. The third factor reflected Neuroticism or Emotionality. Factors similar to Agreeableness, Extraversion, and Emotionality are frequently observed in other taxa. The diverse composition of the Agreeableness factor indicating covariation among obedience, kindness, sociality, and non-aggressiveness may be a result of the intense artificial selection for all four components during the 6000 years of horse domestication. |
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Admin @ knut @ |
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4337 |
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Weiss, A.; King, J.E.; Figueredo, A.J. |
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Title |
The heritability of personality factors in chimpanzees (Pan troglodytes) |
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Journal Article |
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Year |
2000 |
Publication |
Behavior Genetics |
Abbreviated Journal |
Behav Genet |
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30 |
Issue |
3 |
Pages |
213-221 |
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Animals; Female; Humans; Male; Models, Genetic; Pan troglodytes/*genetics; Personality/*genetics; Social Environment |
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Human personality and behavior genetic studies have resulted in a growing consensus that five heritable factors account for most variance in human personality. Prior research showed that chimpanzee personality is composed of a dominance-related factor and five human-like factors--Surgency, Dependability, Emotional Stability, Agreeableness, and Openness. Genetic, shared zoo, and nonshared environmental variance components of the six factors were estimated by regressing squared phenotypic differences of all possible pairs of chimpanzees onto 1 – Rij, where Rij equals the degree of relationship and a variable indicating whether the pair was housed in the same zoo. Dominance showed significant narrow-sense heritability. Shared zoo effects accounted for only a negligible proportion of the variance for all factors. |
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Department of Psychology, University of Arizona, Tucson 85721, USA. aweiss@u.arizona.edu |
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English |
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0001-8244 |
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PMID:11105395 |
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Equine Behaviour @ team @ |
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4143 |
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