Abstract

SummaryThe reaction time‐based concealed information test (RT‐CIT) has been used to judge the veracity of an examinees claim to be naïve by using RTs to test for recognition of relevant details. Here, we explore the validity of the RT‐CIT to generate new knowledge about the incident—the searching CIT. In a mock terrorism study (n = 60) the RT‐CIT not only allowed to link suspects to known crime details, but also allowed to reveal new crime details well above chance. A simulation study confirms the potential of the searching RT‐CIT and identifies conditions under which it performs best. We used an archival dataset that met these conditions (high CIT effect, large number of item repetitions), and found better item classification performance than in the mock terrorism study. The searching RT‐CIT could be a new, promising investigative tool to reveal new (e.g., crime) details to the investigative party.

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