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Illusory Contour Figures Are Perceived as Occluding Contours by 4-Month-Old Infants

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>03/2012
<mark>Journal</mark>Developmental Psychology
Issue number2
Number of pages8
Pages (from-to)398-405
<mark>Original language</mark>English


Although 4-month-olds perceive continuity of an object's trajectory through occlusion, little is known about the information specifying an occluding surface at this age. We investigated this in 3 experiments involving 84 participants. Testing the claim that 5-month-olds are unable to perceive the Kanizsa figure as an occluding surface (Csibra, 2001), we demonstrated that 4-month-olds perceived trajectory continuity behind this figure providing its horizontal extent was small. We demonstrated that the presence of visible occluding edges or occlusion of background was insufficient to specify an occluding surface but that their combination was sufficient. Thus, beyond object deletion and accretion, both visible occluding edges and occlusion of background are necessary for perception of occluding surfaces at this age.

Bibliographic note

This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.