Navigation Links
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 tendencies toward dominance and disinhibition. Beta personalities, on the other hand, show low dominance and positive emotionality.

Further analysis shows these lower order traits also can be statistically broken down into their constituent parts. The research team identified five personality factors that combine differently in each individual chimpanzee: conscientiousness, dominance, extraversion, agreeableness and intellect. This echoes a well-known five-factor model of the human personality, although the specific factors are slightly different.

Now, for the neurobiology: many of those chimpanzee traits statistically correlate with the function of a neuropeptide called vasopressin. Chimps who were born with a common variant in the genes that control vasopressin behaved differently than their peers, the males showing more dominance and more disinhibition, but the females less of both.

This research shows not only a neurobiological basis for personality, but an evolutionary basis as well. The neurobiological bases of personality can vary according to the biological sex of the subject, at least in chimpanzees. Chimpanzee personality appears to have almost the same ingredients as human personalities, and that similarity seems to arise from the species' similar neurobiology.

"These results are particularly significant in light of the striking parallels between the major dimensions of personality found between chimpanzees and humans," said Sam Gosling, professor of psychology at the University of Texas at Austin and an internationally known researcher in cross-species personality research.


'/>"/>

Contact: Ann Claycombe
claycombe@gsu.edu
404-413-5047
Georgia State University
Source:Eurekalert

Related medicine news :

1. Chimpanzees, Like Humans, Seem to Have Sense of Fairness
2. Head, Body Lice Are Genetically Very Similar
3. First, Second Kidney Transplants Have Similar Success: Study
4. Infant Smarts Similar With Different Types of Formula: Study
5. Multiracial youths show similar vulnerability to peer pressure as whites
6. Doctors Tend to Share Patients With Similar Colleagues
7. Anti-clotting drugs yield similar results
8. Ethnic disparities in breast cancer survival remain despite socioeconomic similarities
9. Gut Bacteria Often Similar in Humans, Chimps: Study
10. Many seniors sleep habits are similar to those of young adults, study suggests
11. Cell phone addiction similar to compulsive buying and credit card misuse, according to Baylor study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/7/2016)... ... December 07, 2016 , ... Levels of a protein in the blood ... study appearing online in the journal Radiology. , Heart disease and brain disease exact ... to the rapidly aging population. Damage to both organs often occurs at a subclinical ...
(Date:12/7/2016)... ... December 07, 2016 , ... The Cliff Hart Agencies, a ... Lyon, Dewitt, Williamston, East Lansing, Ann Arbor, and Farmington Hills, is announcing a ... brain tumor. , Jason Bauer and his family are longtime members of the ...
(Date:12/7/2016)... ... December 07, 2016 , ... AlignLife clinics nationwide are giving back to ... fortunate enough to receive bountiful gifts wrapped tightly under a Christmas Tree. AlignLife ... children of the world. , In exchange for generous donations, customers will receive a ...
(Date:12/7/2016)... ... 2016 , ... The Honolulu cosmetic and medical dermatology practice ... October 17, 2016, features comprehensive information regarding a wide range of dermatologic conditions, ... can discover the latest clinical dermatology treatments for medical skin concerns as well ...
(Date:12/7/2016)... ... 07, 2016 , ... 1105 Media’s Live From program has ... Awards competition. Live From won in the Use of Social Media category. The ... projects undertaken by the media industry’s most innovative marketing professionals. , ...
Breaking Medicine News(10 mins):
(Date:12/7/2016)... , Dec. 7, 2016  Ionis Pharmaceuticals, Inc. (NASDAQ: ... management will present a company overview at the BMO Capital Markets ... New York, NY . A live webcast ... section of the Ionis website.  The replay will be available within ... ...
(Date:12/7/2016)... 2016 According to the latest ... Market Study on Multiplex Detection Immunoassay: North America to ... global multiplex detection immunoassay market is expected to witness a CAGR ... ...      (Logo: http://photos.prnewswire.com/prnh/20161114/438683LOGO) ...
(Date:12/7/2016)... , December 7, 2016 ... to reach a value of USD 3.9 billion ... Grand View Research, Inc. The growth of the ... donor and continuous technological advancements by the market ... continuously due to increasing donation, rising awareness about ...
Breaking Medicine Technology: