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Related Experiment Video

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Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
09:49

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Published on: December 24, 2015

Does facial resemblance enhance cooperation?

Trang Giang1, Raoul Bell, Axel Buchner

  • 1Department of Experimental Psychology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany. Trang.Giang@hhu.de

Plos One
|October 25, 2012
PubMed
Summary
This summary is machine-generated.

Facial self-resemblance may not be a reliable cue for kin recognition and cooperation. Studies show it enhances memory for faces but does not influence trust or cooperative behavior.

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Area of Science:

  • Evolutionary Psychology
  • Social Neuroscience
  • Cognitive Psychology

Background:

  • Facial self-resemblance is theorized to act as a kinship cue, promoting cooperation among relatives.
  • This study investigates the role of facial self-resemblance in modulating social behavior and recognition.

Purpose of the Study:

  • To examine whether facial self-resemblance influences cooperation, trust, and memory.
  • To test the hypothesis of an evolved kin recognition module within the human face recognition system.

Main Methods:

  • Facial self-resemblance was manipulated by creating composite faces (self-resemblant vs. other-resemblant).
  • Participants engaged in a cooperation game, provided likability ratings, and completed a source memory test.
  • A norming study assessed perceived kinship of composite faces.

Main Results:

  • Self-resemblant faces were perceived as more kin-like than actual first-degree relatives.
  • Old-new recognition memory was enhanced for self-resemblant faces compared to other-resemblant faces.
  • Facial self-resemblance did not affect cooperation levels, likability judgments, or expectations of cooperative behavior.

Conclusions:

  • The findings contradict the existence of an evolved kin recognition module in human face processing.
  • Facial self-resemblance does not appear to be a sufficient cue for facilitating kin-based cooperation.
  • Memory for self-resemblant faces is enhanced, but this does not translate to altered social decision-making.