The language of deceit: are there reliable verbal clues to deception in the interrogation context?
In recent years, the need for enhanced methods of credibility assessment in criminal cases has become illuminated. Especially in cases of sexual assault, the words of the accused and complainant are often the sole evidence available to police. Consequently, researchers and practitioners have been searching for ways of differentiating truthful and deceptive accounts, focussing mainly on witnesses and victims. With its recent history, however, assessment based on verbal clues has been somewhat myopic and not well grounded in theory or integration. This thesis examined a general hypothesis, based upon conceptual information from a variety of perspectives, that reliable verbal indicators of deception exist in the interrogation situation. Sixty undergraduates were recruited for participation in research addressing “security effectiveness.” Participants either committed a theft “to test the effectiveness of a new security guard” or carried out a similar but innocuous task. They were then ask
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