Infants' use of synchronized visual information to separate streams of speech
George Hollich1, Rochelle S Newman, Peter W Jusczyk
1Department of Psychological Sciences, Purdue University, West Lafayette, IN 47907, USA. ghollich@purdue.edu
Abstract:
In 4 studies, 7.5-month-olds used synchronized visual-auditory correlations to separate a target speech stream when a distractor passage was presented at equal loudness. Infants succeeded in a segmentation task (using the head-turn preference procedure with video familiarization) when a video of the talker's face was synchronized with the target passage (Experiment 1, N = 30). Infants did not succeed in this task when an unsynchronized (Experiment 2, N = 30) or static (Experiment 3, N = 30) face was presented during familiarization. Infants also succeeded when viewing a synchronized oscilloscope pattern (Experiment 4, N = 26), suggesting that their ability to use visual information is related to domain-general sensitivities to any synchronized auditory-visual correspondence.
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