Poster A12, Saturday, March 25, 5:00 – 7:00 pm, Pacific Concourse
The effects of aging on gaze biases for faces
Toshiki Saito1, Rui Nouchi1, Hikari Kinjo2, Ryuta Kawashima1; 1Tohoku University, 2Meiji Gakuin University
Eye movement suggests one’s choice. For example, people facing a choice between multiple stimuli tend to look longer at stimulus that are finally chosen than others. This tendency is called the gaze bias effect. This is one of key aspects of visual decision making. However, little is known about if aging affects the gaze bias effect. Here, we used 2 Alternative Forced Choice Task (2AFC) to compare looking behavior that indicate different stages of decision process between young (n = 18) and older adults (n = 20). We monitored eye movements with eye tracker (Tobii-T60) during 2AFC with four prompts: Like, Dislike, Similar and Dissimilar. The results showed that the gaze bias effect occurred under all conditions in both age groups. However, we found the following age differences. First, in the dislike condition, the first dwell duration (the amount of time that item is looked at when first encountered) of young adults was shorter than older adults. Second, until decision processes, older adults shifted their gaze toward chosen stimuli earlier than young adults. Our results firstly showed that there is an aging effect on the looking behavior during decision making but the gaze bias effect persist through lifetime.
Topic Area: EMOTION & SOCIAL: Development & aging