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Virtual Interrogation: The influence of Virtual Entity Perception on Lie Detection

Plochg, J. (2016) Virtual Interrogation: The influence of Virtual Entity Perception on Lie Detection.

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Abstract:In this study we examine how individuals perceive a virtual interrogator and how this influences the process of truth finding. Previous work demonstrated that deception is accompanied by cognitive load. In our experiment we discriminate liars from truth tellers using measures of skin conductance, an indicator of cognitive load. Participants (N = 72) were randomly divided in a 2 x 2 (veracity x interrogator input) between-subjects factorial design. We find that skin conductance is significant higher for the lie condition compared with the truth condition. More importantly we find that the lie condition and truth condition are discriminated best when individuals think that the virtual interrogator is human-controlled compared with individuals who think the virtual interrogator is computer-controlled. These results provide evidence that agency beliefs (computer- vs human-controlled) influence lie detection during virtual interrogation. We conclude that suspects should be informed that a virtual interrogator is human-controlled to conduct robust lie detection.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology MSc (66604)
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