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    Helping to sort the liars from the truth-tellers: The gradual revelation of information during investigative interviews

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    Authors
    Dando, Coral J.
    Bull, Ray
    Ormerod, Thomas C.
    Sandham, Alexandra L.
    Affiliation
    University of Wolverhampton
    University of Derby
    Lancaster University
    Issue Date
    2013-04-20
    
    Metadata
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    Abstract
    Research examining detection of verbal deception reveals that lay observers generally perform at chance. Yet, in the criminal justice system, laypersons that have not undergone specialist investigative training are frequently called upon to make veracity judgements (e.g., solicitors; magistrates; juries). We sought to improve performance by manipulating the timing of information revelation during investigative interviews. A total of 151 participants played an interactive computer game as either a truth-teller or a deceiver, and were interviewed afterwards. Game information known to the interviewer was revealed either early, at the end of the interview, or gradually throughout. Subsequently, 30 laypersons individually viewed a random selection of interviews (five deceivers and five truth-tellers from each condition), and made veracity and confidence judgements. Veracity judgements were most accurate in the gradual condition, p < .001, η2 = .97 (above chance), and observers were more confident in those judgements, p < .001, η2 = .99. Deceptive interviewees reported the gradual interviews to be the most cognitively demanding, p < .001; η2 = .24. Our findings suggest that the detection of verbal deception by non-expert observers can be enhanced by employing interview techniques that maximize deceivers' cognitive load, while allowing truth-tellers the opportunity to respond to evidence incrementally.
    Citation
    Dando, C. J. et al (2015) 'Helping to sort the liars from the truth-tellers: The gradual revelation of information during investigative interviews', Legal and Criminological Psychology, 20 (1):114
    Publisher
    Wiley
    Journal
    Legal and Criminological Psychology
    URI
    http://hdl.handle.net/10545/621768
    DOI
    10.1111/lcrp.12016
    Additional Links
    http://doi.wiley.com/10.1111/lcrp.12016
    Type
    Article
    Language
    en
    ISSN
    13553259
    ae974a485f413a2113503eed53cd6c53
    10.1111/lcrp.12016
    Scopus Count
    Collections
    Derby Law School

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