Featured Research

from universities, journals, and other organizations

Chimpanzees of a feather sit together: Friendships are based on similar personalities

Date:
October 9, 2013
Source:
University of Vienna
Summary:
Like humans, many animals have close and stable friendships. However, until now, it has been unclear what makes particular individuals bond. Cognitive biologists have now found that chimpanzees choose for friends those who are similar to them in personality.

Chimpanzee Tushi.
Credit: (Copyright: Jorg Massen

Like humans, many animals have close and stable friendships. However, until now, it has been unclear what makes particular individuals bond. Cognitive Biologists of the University of Vienna, Austria, and the University of Zurich, Switzerland, explored the question and found that chimpanzees choose their friendships based on similarity of personality.

Related Articles


The results of this study appear in the scientific journal Evolution and Human Behaviour.

Jorg Massen (University of Vienna) and Sonja Koski (University of Zurich) together measured chimpanzee personality in two zoos with behavioural experiments and years of observations of chimpanzee behaviour. They also carefully logged which chimpanzee sat in body contact with whom most. "This is a clear sign of friendship among chimpanzees," explains Jorg Massen. Subsequently, the researchers tested, if those chimpanzees who sit together frequently have similar or different personality types.

"We found that, especially among unrelated friends, the most sociable and bold individuals preferred the company of other highly sociable and bold individuals, whereas shy and less sociable ones spent time with other similarly aloof and shy chimpanzees," says the researcher. The researchers argue that such a strong preference for self-like individuals is probably adaptive, because frequent cooperation becomes more reliable when both partners have similar behavioural tendencies and emotional states.

This finding strongly resembles the known "similarity effect" in humans: We tend to make friends with people who are equally extraverted, friendly and bold as ourselves. "It appears that what draws and keeps both chimpanzee and human friends together is similarity in gregariousness and boldness, suggesting that preference for self-like friends dates back to our last common ancestor," ends Jorg Massen.


Story Source:

The above story is based on materials provided by University of Vienna. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jorg J.M. Massen, Sonja E. Koski. Chimps of a feather sit together: chimpanzee friendships are based on homophily in personality. Evolution and Human Behavior, 2013; DOI: 10.1016/j.evolhumbehav.2013.08.008

Cite This Page:

University of Vienna. "Chimpanzees of a feather sit together: Friendships are based on similar personalities." ScienceDaily. ScienceDaily, 9 October 2013. <www.sciencedaily.com/releases/2013/10/131009100225.htm>.
University of Vienna. (2013, October 9). Chimpanzees of a feather sit together: Friendships are based on similar personalities. ScienceDaily. Retrieved March 6, 2015 from www.sciencedaily.com/releases/2013/10/131009100225.htm
University of Vienna. "Chimpanzees of a feather sit together: Friendships are based on similar personalities." ScienceDaily. www.sciencedaily.com/releases/2013/10/131009100225.htm (accessed March 6, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, March 6, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Praying Mantis Looks Long Before It Leaps

Praying Mantis Looks Long Before It Leaps

Reuters - Innovations Video Online (Mar. 5, 2015) Slowed-down footage of the leaps of praying mantises show the insect&apos;s extraordinary precision, say researchers. Video provided by Reuters
Powered by NewsLook.com
Octopus Grabs Camera and Turns It Around On Photographer

Octopus Grabs Camera and Turns It Around On Photographer

Buzz60 (Mar. 5, 2015) A photographer got the shot of a lifetime, or rather an octopus did, when it grabbed the camera and turned it around to take an amazing picture of the photographer. Jen Markham (@jenmarkham) has the story. Video provided by Buzz60
Powered by NewsLook.com
Ringling Bros. Eliminating Elephant Acts

Ringling Bros. Eliminating Elephant Acts

AP (Mar. 5, 2015) The Ringling Bros. and Barnum & Bailey Circus is ending its iconic elephant acts. The circus&apos; parent company, Feld Entertainment, told the AP exclusively that the acts will be phased out by 2018 over growing public concern about the animals. (March 5) Video provided by AP
Powered by NewsLook.com
Raw: Tourists Visit Rare Grey Whales in Mexico

Raw: Tourists Visit Rare Grey Whales in Mexico

AP (Mar. 4, 2015) Once nearly extinct, grey whales now migrate in their thousands to Mexico&apos;s Vizcaino reserve in Baja California, in search of warmer waters to mate and give birth. Tourists flock to the reserve to see the whales, measuring up to 49 feet long. (March 4) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins