Personality, cognition and behavior in chimpanzees: a new approach based on Eysenck's model.

摘要: Personality has been linked to individual variation in interest and performance cognitive tasks. Nevertheless, this relationship is still poorly understood rarely considered animal cognition research. Here, we investigated the association between personality interest, motivation task 13 sanctuary chimpanzees (Pan troglodytes) housed at Fundacio Mona (Spain). was assessed with a 12-item questionnaire based on Eysenck's Psychoticism-Extraversion-Neuroticism model completed by familiar keepers researchers. Additionally, ratings were compared behavioral observations conducted over an 11-year period. Experimental tasks consisted several puzzle boxes that needed be manipulated order obtain food reward. Dependent variables included participation (as indicator of interest), success latency measures performance), losing contact motivation). As predicted, obtained significant correlations traits observed behaviors, although some expected associations absent. We then analyzed data using Generalized Linear Mixed Models, running for each dependent variable. In both sexes, lower Extraversion Dominance higher probability success, but effect stronger females. Furthermore, Neuropsychoticism predicted females, not males. The young chimpanzees, those rated Dominance. also more likely stop interacting task, again evident Participation any trait. Our findings show PEN may good describe chimpanzee personality, stress importance considering when interpreting results research non-human primates.