Eliciting information and cues to deception using a model statement: Examining the effect of presentation modality

Cody Normitta Porter, Giacomo Salvanelli

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Abstract

Forensic interviewing involves gathering information from a suspect or eyewitness. Administering a model statement during an interview results in greater information elicitation, which can enhance lie detection. Typically, a model statement is a highly detailed statement, on an unrelated topic to that of the interview. This study examined the effect of manipulating the modality of the MS, either by allowing participants to listen to (Audio‐MS), or read (Written‐MS) a model statement. A total of 162 (81 truth tellers, 81 liars) participants were randomly allocated to one of three interviewing conditions where they received either the Audio‐MS, Written‐MS, or No‐MS (control condition). Truth tellers honestly reported a “spy” mission, whereas liars performed a covert mission and lied about their activities. Results showed both model statements were equally more effective at eliciting information and facilitating lie detection, compared with a control condition. Theoretical and practical implications are discussed.
Original languageEnglish
JournalJournal of Investigative Psychology and Offender Profiling
Early online date8 Feb 2020
DOIs
Publication statusEarly online - 8 Feb 2020

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