Pupil Dilation and Object Permanence in Infants

Infancy : the Official Journal of the International Society on Infant Studies
Sylvain Sirois, Iain Jackson

Abstract

This paper examines the relative merits of looking time and pupil diameter measures in the study of early cognitive abilities of infants. Ten-month-old infants took part in a modified version of the classic drawbridge experiment used to study object permanence (Baillargeon, Spelke, & Wasserman, 1985). The study involved a factorial design where angle of rotation and presence or absence of an object were crossed. Looking time results are consistent with previous work and could suggest object permanence if one ignored data from all cells of the factorial design. When all cells are considered, the data rather suggest a perceptual interpretation. Dynamic changes in pupil diameter uniquely support this interpretation, illustrating which aspects of events (and when) infants primarily respond to. Overall, the results fail to support object permanence in 10-month-olds, and pupil dilation provides a much finer-grained interpretation of infants' information processing, relative to looking time.

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Citations

Aug 1, 2020·Infancy : the Official Journal of the International Society on Infant Studies·Felicia Zhang, Lauren L Emberson
Aug 27, 2015·Wiley Interdisciplinary Reviews. Cognitive Science·Sylvain Sirois, Julie Brisson
Dec 7, 2018·Developmental Science·Felicia ZhangLauren L Emberson
Jun 24, 2018·Scientific Reports·Yi-Chuan Chen, Gert Westermann
Mar 8, 2013·Behavior Research Methods·Julie BrissonSylvain Sirois
Oct 2, 2014·Psychological Science·Jean-Rémy Hochmann, Liuba Papeo
Nov 3, 2017·Frontiers in Psychology·Stefanie HoehlGustaf Gredebäck
Apr 4, 2019·Developmental Science·Wiebke Pätzold, Ulf Liszkowski
Jan 18, 2018·Behavior Research Methods·Ronen HershmanNoga Cohen
Jan 7, 2021·Infancy : the Official Journal of the International Society on Infant Studies·Viktoria CsinkTeodora Gliga
Feb 3, 2021·Cognition·Jean-Rémy Hochmann, Juan M Toro

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