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Related Experiment Videos

Who can catch a liar?

P Ekman1, M O'Sullivan

  • 1Human Interaction Laboratory, University of California, San Francisco 94143.

The American Psychologist
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

Detecting deception is challenging, but U.S. Secret Service agents showed superior accuracy compared to other groups. Accurate individuals utilized distinct behavioral cues and skills, regardless of their profession.

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Area of Science:

  • Psychology
  • Criminology
  • Behavioral Science

Background:

  • Accurate deception detection is crucial for law enforcement and security.
  • Previous research has yielded mixed results on the ability of professionals to detect lies.

Purpose of the Study:

  • To evaluate the accuracy of deception detection across various professional and demographic groups.
  • To identify potential factors contributing to accurate lie detection.

Main Methods:

  • 509 participants from diverse backgrounds (law enforcement, intelligence agencies, judiciary, mental health professionals, students, general adults) viewed videotapes of individuals either lying or telling the truth.
  • Performance was assessed based on accuracy in identifying truthful versus deceptive statements.

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Main Results:

  • Only the U.S. Secret Service significantly outperformed chance in detecting deception.
  • The Secret Service demonstrated significantly higher accuracy than all other tested groups.
  • Individuals who were accurate in detecting deception employed different behavioral cues and possessed distinct skills compared to inaccurate individuals.

Conclusions:

  • Specific training and experience, such as that of the U.S. Secret Service, may enhance deception detection abilities.
  • Identifying and understanding the specific behavioral cues and skills used by accurate lie detectors warrants further investigation.