Development of three-dimensional object completion in infancy.
Three-dimensional (3D) object completion was investigated by habituating 4- and 6-month-old infants (n= 24 total) with a computer-generated wedge stimulus that pivoted 15 degrees , providing only a limited view. Two displays, rotating 360 degrees , were then shown: a complete, solid volume and an incomplete, hollow form composed only of the sides seen during habituation. There were no reliable preferences for either test display by 4-month-olds. At 6 months, infants showed a reliable novelty preference for the incomplete test display. Infants in a control group (n= 24) not habituated to the limited-view wedge preferred neither test display. By 6 months, infants may represent simple objects as complete in 3D space despite a limited perspective. Possible mechanisms of development of 3D object completion are discussed.
Soska
Kasey C
KC
Department of Psychology, New York University, New York, NY 10003, USA. kasey.soska@nyu.edu
Johnson
Scott P
SP
D001288:Attention; D001364:Awareness; D002657:Child Development; D003210:Concept Formation; D005260:Female; D006185:Habituation, Psychophysiologic; D006801:Humans; D007223:Infant; D008297:Male; D014584:User-Computer Interface; D014796:Visual Perception