Open AccessThe effect of eye size on discriminating faces: Can infants recognize facial uncanniness?
Author(s) -
Sakuta Yuiko,
Sato Kazuki,
Kanazawa So,
Yamaguchi Masami K.
Publication year - 2014
Publication title -
japanese psychological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 30
eISSN - 1468-5884
pISSN - 0021-5368
DOI - 10.1111/jpr.12057
Subject(s) - perception , psychology , face perception , uncanny valley , face (sociological concept) , uncanny , visual perception , cognitive psychology , audiology , developmental psychology , neuroscience , medicine , social science , sociology , psychoanalysis
Infants' ability to recognize uncanny human faces increases during the first year of life. In turn, their ability to recognize faces of other species declines at almost the same period (perceptual narrowing). In the current study, we aimed to clarify the relationship between the perception of uncanniness of faces and perceptual narrowing in infants and adults. We used the “uncanny valley task,” in which the participants were required to discriminate the faces of humans and monkeys by different eye size. Results showed that 3‐ to 5‐month‐old infants could not discriminate either monkey or human faces by eye size, whereas 6‐ to 8‐month olds could. Adults showed higher discrimination performance for human than monkey faces and perceived the human faces with extremely large or small eyes as exceedingly eerie. Our results suggest that perception of uncanniness of faces is formed after perceptual narrowing.