By Pär Anders Granhag, Leif A. Strömwall
Deception detection has commonly been characterised through methods which learn varied facets of deception reminiscent of verbal content material, non-verbal habit and polygraph trying out. fresh in depth examine during this box has ended in a magnificent corpus of state-of-the-art wisdom. The contributions of foreign specialists during this quantity offer a useful source for lecturers, scholars and practitioners within the felony area.
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Additional info for The Detection of Deception in Forensic Contexts
Example text
Clever liars could simply describe what they really were doing on a different evening, thereby drawing from as accessible a set of facts and memories as those of any truth-teller. Also, to the extent that suspects can anticipate some of the questions they may be asked, they can prepare their answers in advance. The issue then becomes whether the liars know how to communicate their planned answers in a way that sounds both sincere and spontaneous. There is another important psychological difference between liars and truth-tellers that could result in the two creating different impressions.
People lying about transgressions look more nervous than do truth-tellers. They also blink more and speak more quickly. In addition, they are more inhibited than truth-tellers: they move their feet and legs less often. Do liars give themselves away by saying too much? In some of the studies we reviewed, liars and truth-tellers spoke very briefly – sometimes all they said was just one word. In other studies, liars and truth-tellers talked 30 Bella M. DePaulo and Wendy L. 3 Note: QB = homogeneity between the two levels of the moderator being compared; significance indicates rejection of the hypothesis of homogeneity of effect sizes (ds).
In addition to making explicit judgements of whether the stories were truths or lies, and describing the cues they used to decide, the perceivers answered a series of other questions about how they felt while listening to each of the stories. For example, they indicated how comfortable they felt, how suspicious they were, the extent to which their friend (the storyteller) seemed to sense their suspicion, and so forth. Videotapes of the interactions between the pairs of friends were also shown to new perceivers who answered many of the same questions (Anderson, DePaulo, and Ansfield, 2002).
