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- Title
Revealing concealed information via eye movements: the promise of the short- term memory task.
- Authors
Dayan, Oryah chen; Nahari, Tal; Ben-Shakhar, Gershon; Pertzov, Yoni
- Abstract
The concept of the eyes as a window to an inner world is commonly acknowledged, but only recently has it started to gain a scientific justification. Through a series of studies, we provide a new framework for such an interplay between personal experience and eye movements, across different tasks and diverse types of stimuli. In all of these studies, the visual design of the paradigm was similar (i.e., a parallel display of four items, one of them personally familiar to the participant). Yet, we manipulated the task demands and the instructions to the participants. Our results indicate that task demands are a crucial factor when formulating the interaction between familiarity and gaze behavior; when participants freely viewed the display, they preferentially gazed at the familiar item. However, when they were asked to memorize the items, this preference tendency was evident only at the beginning of the trial, followed by a strong tendency to avoid the familiar item. Task demands also influenced the ability to voluntarily control the visual exploration; while instructions to deploy gaze equally to all faces led to a diminution of the preference effect, the avoidance effect was robust even under such instructions. By using this pattern of preference and avoidance, we could accurately classify between familiar and unfamiliar stimuli. This classification ability is highly needed in the fields of security and law enforcement. Accordingly, this line of research provides a unique opportunity to utilize theoretical knowledge regarding memory guided-gaze for solving real-world problems.
- Subjects
EYE movements; GAZE; MEMORY; FAMILIARITY (Psychology); SECURITIES industry laws; TASKS
- Publication
Journal of Eye Movement Research, 2019, Vol 12, Issue 7, p200
- ISSN
1995-8692
- Publication type
Article