Bremner, J. Gavin and Slater, Alan M. and Johnson, Scott P. and Mason, Ursula and Spring, Joanne and Bremner, Maggie E. (2011) Two- to Eight-Month-Old Infants' Perception of Dynamic Auditory-Visual Spatial Colocation. Child Development, 82 (4). pp. 1210-1223. ISSN 0009-3920
From birth, infants detect associations between the locations of static visual objects and sounds they emit, but there is limited evidence regarding their sensitivity to the dynamic equivalent when a sound-emitting object moves. In 4 experiments involving thirty-six 2-month-olds, forty-eight 5-month-olds, and forty-eight 8-month-olds, we investigated infants' ability to process this form of spatial colocation. Whereas there was no evidence of spontaneous sensitivity, all age groups detected a dynamic colocation during habituation and looked longer at test trials in which sound and sight were dislocated. Only 2-month-olds showed clear sensitivity to the dislocation relation, although 8-month-olds did so following additional habituation. These results are discussed relative to the intersensory redundancy hypothesis and work suggesting increasing specificity in processing with age.
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