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Deception In Police Investigations

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The truth is everybody lies (DePaulo & Kashy, 1998). Deception is the intent to foster a belief in another person that the deceiver considers false (Zuckerman, DePaulo, & Rosenthal, 1981). Deception is part of everyday life and the ability to detect deception has been investigated extensively over the past decades (Newman, Pennebaker, Berry, & Richards, 2003; Vrij, 2008; Vrij, Edward, Roberts, & Bull, 2000). While some lies are harmless and are used to avoid embarrassment or to make positive impressions, serious lies can result in dire consequences, from the wrongful imprisonment of innocents to criminals avoiding imprisonment. Being able to distinguish between someone telling the truth or not is crucial due to the implications in police investigations leading, in turn, to a fair criminal justice system.
The police interview plays a crucial role in eliciting the best quality and quantity of information from the interviewee, which could lead to the responsible individual being charged with a …show more content…
For example, a recent review found that people were able to distinguish between truth and lies only 54% of the time (Bond & DePaulo, 2006). Most research has paid exaggerated focus to non-verbal cues, including facial expression, vocal pitch and gesture, which either subjectively rely on human judgement or fail to achieve acceptable accuracy levels on a consistent level (Vrij, 2008). A recent meta-analysis suggested that only training in the recognition of verbal cues can improve deception detection (Hauch et al., 2016). However, technological progress means that linguistic cues can now be assessed automatically by utilising computer-based software such as Linguistic Inquiry and Word Count (LIWC) (Pennebaker, Francis, & Booth, 2001). Certainly, a computer system would be less disposed to human error, provide less subjective results, be less invasive and would not require complex

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