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The Efficacy of Cognitive Credibility Assessment to Detect Omission Lies, Embedded Lies and Total Fabrications

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Applied Cognitive Psychology

Published online on

Abstract

["Applied Cognitive Psychology, Volume 40, Issue 4, July/August 2026. ", "\nABSTRACT\nWe tested the efficacy of cognitive credibility assessment (CCA) to discriminate between truth tellers and lie tellers in three types of lie scenarios: omission lies, embedded lies and total fabrications. We expected CCA to be most effective when lie tellers must make up most details: in the fabrication lie condition. Sixty participants were interviewed about two memorable events. They told the truth about one event and lied (omission lie, embedded lie or total fabrication) about the other event. The order of being truthful and deceptive was counterbalanced. Six verbal cues were examined: total details, complications, common knowledge details, self‐handicapping strategies, plausibility and predictability. A multivariate significant Veracity main effect occurred. Participants reported more complications, and their statements sounded more plausible and less predictable when truth‐telling compared to lying. Significant Veracity × Type of Lie interaction effects did not occur, neither at a multivariate nor at a univariate level.\n"]