Two- to eight-month-old infants' perception of dynamic auditory-visual spatial colocation |
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Authors: | Bremner J Gavin Slater Alan M Johnson Scott P Mason Uschi C Spring Jo Bremner Maggie E |
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Institution: | Psychology Department, Centre for Research in Human Development, Lancaster University, UK. j.g.bremner@lancaster.ac.uk |
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Abstract: | 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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