Assessing beliefs to verbal and non-verbal cues: potential for lie detection in cases of benefit fraud

Holland-Clarke, Andrea (2012) Assessing beliefs to verbal and non-verbal cues: potential for lie detection in cases of benefit fraud. BSc dissertation, University of Portsmouth.

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    Deception research has traditionally focused on three methods of identifying liars and truth tellers: observing non-verbal cues, analysing verbal cues and monitoring physiological arousal such as polygraph testing. Research has shown that professional lie detectors are often incapable of discriminating between liars and truth tellers with better than chance accuracy when using these methods. One possible explanation for such poor performance is that lie detectors are not properly applying existing lie detection methods or alternatively, the cues that lie detectors rely on to discriminate between liars and truth tellers are flawed.

    This study examines 38 responses to a questionnaire circulated to DWP benefit fraud investigators to explore the beliefs that benefit fraud investigators hold relating to their views on which verbal and non verbal cues are diagnostic to deception and considers what existing lie detection methods investigators currently use. It was found that benefit fraud investigators have a tendency to pay attention to cues that are not reliably associated with deception which is suggestive that training needs should be addressed to improve upon the potential to detect deceit. However, it was found that the strategic use of evidence as a detection method was applied throughout the investigative interview. But, the study indicates that further research is required into alternative techniques the Department could adopt in its pursuit of driving down fraud.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Humanities and Social Sciences > Institute of Criminal Justice Studies
    Depositing User: Jane Polwin
    Date Deposited: 14 Nov 2012 08:19
    Last Modified: 28 Jan 2015 12:10

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