The effect of using countermeasures in interpreter-absent and interpreter-present interviews

In two experiments we examined whether lie tellers, after reading articles about the Model Statement interview tool and/or about the verbal cues complications, common knowledge details and self-handicapping strategies, can successfully use countermeasures by adjusting their statements so that they sound like truth tellers. We also examined whether the presence of an interpreter affect these results.

In both experiments, truth tellers discussed a trip they had made; lie tellers fabricated a story. Participants were of Lebanese, Mexican and South-Korean origin. Prior to the interview participants in Experiment 1 did or did not receive information about (i) the working of the Model Statement tool and (ii) three types of verbal detail: complications, common knowledge details and self-handicapping strategies. In Experiment 2 the Model Statement Pre-Information factor was replaced by the presence/absence of an interpreter. We found no evidence that lie tellers adjusted their responses after being informed about the Model Statement and / or the types of detail we examined.