Attempts of people to conceal what they know are quite common, as in court, neuropsychological assessments or interpersonal relationships. These attempts sometimes carry significant consequences as in incriminations of criminals and thwarting terror attacks. Thus, there is a need for empirical, theory-driven tools that will allow for the detection of concealed memories and avoid false accusations. In a recent paper, published in Trends in Cognitive Sciences, Oryah Lancry-Dayan, Prof. Yoni Pertzov and Prof. Gershon Ben-Shakhar review the latest advances in the field and highlight the potential of eye-tracking for memory detection. In contrast to previous methods, which include physiological responses and EEG, tracking gaze behavior enables researchers to use more complex paradigms that include displays of several objects simultaneously. These paradigms allow for harnessing different cognitive processes (e.g., encoding, retrieval and change detection) for classifying what is familiar to the observer and what is not.
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