MARCS Institute, University of Western Sydney and Haskins Laboratories.
Child Dev. 2013 Nov-Dec;84(6):2064-78. doi: 10.1111/cdev.12087. Epub 2013 Mar 22.
By 12 months, children grasp that a phonetic change to a word can change its identity (phonological distinctiveness). However, they must also grasp that some phonetic changes do not (phonological constancy). To test development of phonological constancy, sixteen 15-month-olds and sixteen 19-month-olds completed an eye-tracking task that tracked their gaze to named versus unnamed images for familiar words spoken in their native (Australian) and an unfamiliar non-native (Jamaican) regional accent of English. Both groups looked longer at named than unnamed images for Australian pronunciations, but only 19-month-olds did so for Jamaican pronunciations, indicating that phonological constancy emerges by 19 months. Vocabulary size predicted 15-month-olds' identifications for the Jamaican pronunciations, suggesting vocabulary growth is a viable predictor for phonological constancy development.
12 个月大的婴儿已经掌握,一个单词的语音变化可以改变其身份(语音区别性)。然而,他们还必须掌握一些语音变化不会改变(语音恒常性)。为了测试语音恒常性的发展,16 名 15 个月大的婴儿和 16 名 19 个月大的婴儿完成了一项眼动追踪任务,该任务追踪了他们的目光,以确定他们对母语(澳大利亚)和非母语(牙买加)英语地区口音说出的熟悉单词的命名与未命名图像的注视时间。两组婴儿对澳大利亚语发音的命名图片的注视时间都长于未命名图片,但只有 19 个月大的婴儿对牙买加语发音的命名图片注视时间更长,这表明语音恒常性在 19 个月时出现。词汇量大小预测了 15 个月大的婴儿对牙买加语发音的识别,这表明词汇量的增长是语音恒常性发展的一个可行预测因素。