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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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posted on 2023-06-08, 21:36 authored by Coral J Dando, Ray Bull, Thomas OrmerodThomas Ormerod, Alexandra L SandhamResearch 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, ?2 = .97 (above chance), and observers were more confident in those judgements, p < .001, ?2 = .99. Deceptive interviewees reported the gradual interviews to be the most cognitively demanding, p < .001; ?2 = .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.
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Publication status
- Published
File Version
- Published version
Journal
Legal and Criminological PsychologyISSN
1355-3259Publisher
British Psychological SocietyExternal DOI
Issue
1Volume
20Page range
114-128Department affiliated with
- Psychology Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2015-07-13First Compliant Deposit (FCD) Date
2015-07-13Usage metrics
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