Infants 5-15 wk of age were exposed to 1 of 4 experimental conditions that involved the presentation of natural speech stimuli contingent on the infants'' nonnutritive sucking, the withdrawal of speech stimuli contingent on the infants'' nonnutritive sucking, the noncontingent presentation of speech stimuli, and no speech stimuli. Only the presentation of speech stimulation contingent on the infants'' nonnutritive sucking resulted in a significant change in the rate of such sucking compared to infants receiving no sound stimulation.
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页码:170 / 171
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[1]
Butterfield E.C., 1972, Oral sensation and perception: The mouth of the infant