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Chimpanzees show similar personality traits to humans, Georgia State researchers say
Date:5/6/2014

ATLANTA--Chimpanzees have almost the same personality traits as humans, and they are structured almost identically, according to new work led by researchers at Georgia State University.

The research also shows some of those traits have a neurobiological basis, and that those traits vary according to the biological sex of the individual chimpanzee.

"Our work also demonstrates the promise of using chimpanzee models to investigate the neurobiology of personality processes," said Assistant Professor Robert Latzman of Psychology, who led the research team. "We know that these processes are associated with a variety of emotional health outcomes. We're excited to continue investigating these links."

The team, which also included Professor William Hopkins of Neuroscience, started with a common tool for analyzing chimp personalities called the Chimpanzee Personality Questionnaire.

The questionnaire is filled out by the chimpanzees' caregivers, who rate individual chimps in 43 categories based on their observation of the animals' daily behavior. Is the chimp excitable? Impulsive? Playful? Timid? Dominant? The questionnaire records it all.

The researchers analyzed complete questionnaires for 174 chimpanzees housed at the Yerkes National Primate Center at Emory University. They ran extensive individual analyses to find out which traits tend to go together, and which combine to make more basic, fundamental "meta-traits."

The analysis showed that the most fundamental personality trait for chimpanzees is dominance that is, whether an animal is a generally dominant and undercontrolled "Alpha," or a more playful and sociable "Beta."

But those two big categories can be broken down statistically into smaller personality traits in ways that echo the personality structures researchers have repeatedly found in child and adult human subjects.

Alpha personalities, for example, statistically break down into tenden
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Contact: Ann Claycombe
claycombe@gsu.edu
404-413-5047
Georgia State University
Source:Eurekalert

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