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Posted By: JT Burtchaell

I think he was lying too, but I hate overconfidence.

From The Forensic Examiner, Spring 2006

By Michael G. Aamodt, PhD, FACFEI, DSPCP
and Heather Custer, MS

Abstract
A meta-analysis was conducted to determine if there were individual
differences in the ability to detect deception. On the basis
of 108 studies covering 16,537 subjects, the results indicated that
confidence, age, experience, education, and sex were not
significantly related to accuracy in detecting deception. The study also
found that “professional lie catchers” such as police officers, detectives,
judges, and psychologists (M = 55.51%, N = 2,685) were no more accurate at detecting deception than were students and other citizens (M = 54.22%, N = 11,647).

JT