Vouloumanos Athena, Werker Janet F
Department of Psychology, University of British Columbia, Canada.
Dev Sci. 2004 Jun;7(3):270-6. doi: 10.1111/j.1467-7687.2004.00345.x.
Do young infants treat speech as a special signal, compared with structurally similar non-speech sounds? We presented 2- to 7-month-old infants with nonsense speech sounds and complex non-speech analogues. The non-speech analogues retain many of the spectral and temporal properties of the speech signal, including the pitch contour information which is known to be salient to young listeners, and thus provide a stringent test for a potential listening bias for speech. Our results show that infants as young as 2 months of age listened longer to speech sounds. This listening selectivity indicates that early-functioning biases direct infants' attention to speech, granting speech a special status in relation to other sounds.
与结构相似的非语音声音相比，年幼的婴儿是否将语音视为一种特殊信号？我们向2至7个月大的婴儿呈现无意义的语音和复杂的非语音类似物。这些非语音类似物保留了语音信号的许多频谱和时间特性，包括已知对年轻听众很突出的音高轮廓信息，因此为语音的潜在听力偏好提供了严格的测试。我们的结果表明，2个月大的婴儿对语音声音的聆听时间更长。这种聆听选择性表明，早期起作用的偏好将婴儿的注意力引向语音，使语音相对于其他声音具有特殊地位。
