![]() They're also training law-enforcement experts. From this research, psychologists are developing new detection tools such as software to analyze facial expressions and writing style. That's why psychologists have been cataloging clues to deception-such as facial expressions, body language and linguistics-to help hook the dishonest. ![]() Polygraph tests- so-called "lie detectors"-are typically based on detecting autonomic reactions and are considered unreliable (see "The polygraph in doubt"). Research has shown that even agents from the FBI, CIA and Drug Enforcement Agency don't do much better than chance in telling liars from truth-tellers.įor example, a recent, as yet unpublished meta-analysis of 253 studies of people distinguishing truths from lies revealed overall accuracy was just 53 percent-not much better than flipping a coin, note the authors, psychologists Charles Bond, PhD, of Texas Christian University, and Bella DePaulo, PhD, of the University of California, Santa Barbara. ![]() Yet detecting deception often stumps the most experienced police officers, judges, customs officials and other forensic professionals. ![]() Telling a little white lie may on occasion soothe ruffled social feathers, but covering up a murder plot or withholding information on terrorist cells can devastate individuals and society at large. ![]()
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