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Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems

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Chimpanzees Trust Their Friends.

Jan M Engelmann¹, Esther Herrmann¹

¹Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany.

Current Biology : CB

|January 19, 2016

Summary

This summary is machine-generated.

Trust is crucial for cooperation, but risky. Studying chimpanzees (Pan troglodytes), researchers found they trust friends more than non-friends, suggesting trust

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Behavioral Assessment of Manual Dexterity in Non-Human Primates

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Published on: November 11, 2011

Area of Science:

Evolutionary Psychology
Primatology
Behavioral Ecology

Background:

Cooperation requires trustworthy partners, posing an evolutionary challenge due to the risk of defection.
Friendships can facilitate trust, even when cheating is advantageous.
The evolutionary origins of human trust and social bonding remain largely unknown.

Purpose of the Study:

To investigate the evolutionary origins of trust by studying chimpanzees (Pan troglodytes), our closest living relatives.
To determine if chimpanzees exhibit trust in their social relationships, particularly with friends.

Main Methods:

Observation of social interactions within a chimpanzee group to identify dyadic friendship relations.
Implementation of a modified, non-verbal version of the human trust game.
Analysis of trust behaviors between friends and non-friends.

Main Results:

Chimpanzees demonstrated significantly higher levels of trust towards their established friends compared to non-friends.
This preferential trust in friends suggests a foundation for trust within close social bonds.

Conclusions:

Trust within closely bonded dyads is not exclusive to humans.
The evolutionary roots of trust are likely found in the social relationships of our closest primate relatives, such as chimpanzees.