DECEPTION AND DECEPTION DETECTION - THE ROLE OF CROSS-MODAL INCONSISTENCY

The authors investigated whether observers infer others' credibility f rom the consistency of their visible and audible characteristics, and whether such inferences are justified. In Study 1, target persons were videotaped while reading a standard text; in Study 2, target persons were videotaped while lying or telling the truth. From these videotape s, silent films and audiotapes were produced and presented to independ ent observers who inferred the targets' personality traits from this i nformation. Measures of cross-modal discrepancy were derived from diff erences between personality descriptions based on a silent film or an audiotape. Lying resulted in cross-modal discrepancies in impressions of Agreeableness, and cross-modal discrepancies in Agreeableness were related to judgments of dishonesty. Deception detection was substantia l if the judges were exposed to acoustic information on the targets, a nd if the targets faked their curriculum vitae. Deception detection wa s to some extent, but not entirely, mediated by cross-modal discrepanc ies in impressions of Agreeableness.