Effects of verbalization on lie detection

Abstract

We determined whether verbalization had an effect on lie detection. Participants were randomly assigned to one of the three conditions: the lie condition, the truth condition, or the control condition. They were asked to indicate whether the target man was either lying or telling the truth. Prior to making their judgments, the participants in the lie condition were required to describe some behaviors exhibited by the target individual that indicated that he was lying. Similarly, prior to making their judgments, those in the truth condition were asked to describe some behaviors exhibited by the target individual that indicated that he was telling the truth. The participants in the control condition were asked only to make judgments. The participants in the lie condition detected lies more often than those in the other two conditions. Thus, verbalization influenced lie detection.


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