Do You Know Him? Gaze Dynamics Toward Familiar Faces on a Concealed Information Test

Oryah C. Lancry-Dayan, Tal Nahari, Gershon Ben-Shakhar, Yoni Pertzov*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Can gaze position reveal concealed knowledge? During visual processing, gaze allocation is influenced not only by features of the visual input, but also by previous exposure to objects. However, the dynamics of gaze allocation toward personally familiar items remains unclear, especially in the context of revealing concealed familiarity. When memorizing four pictures of faces on a short term memory task, participants’ gaze was initially directed toward a personally familiar face, followed by a strong avoidance from it. This avoidance was evident even when participants were instructed to conceal their familiarity and direct their gaze equally to all faces. On the other hand, participants were partially able to control the initial preference to fixate on the familiar face. By exploiting these patterns, a machine learning classification algorithm and signal detection analysis revealed impressive detection efficiency estimates, suggesting practical applications of recent theoretical insights from the domains of eye tracking and memory.

Original languageAmerican English
Pages (from-to)291-302
Number of pages12
JournalJournal of Applied Research in Memory and Cognition
Issue number2
StatePublished - Jun 2018

Bibliographical note

Publisher Copyright:
© 2018 Society for Applied Research in Memory and Cognition


  • Attention
  • Eye movements
  • Information detection
  • Memory


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