The hyperarticulation hypothesis of infant-directed speech
The hyperarticulation hypothesis of infant-directed speech
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DOI：
10.1017/s0305000912000669
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发表时间：
2014-07-01
影响因子：
2.2
通讯作者：
Seidl, Amanda
中科院分区：
文献类型：
--
作者：
Cristia, Alejandrina;Seidl, Amanda
通常，与成人定向语音（ADS）相比，点元音[i，a，u]在婴儿定向语音（IDS）中在声学上更外围。如果护理人员试图突出IDS中词汇相关的对比，那么两个对比的声音应该变得更加明显，而两个声音是相同的底层声音类别的表面实现不应该。为了验证这一预测，美国英语母亲在IDS和ADS中对两个年龄组的婴儿（4个月和11个月奥尔兹）诱发了音位对比的元音（[i-I]和[eI-I]）、映射到同一基础范畴的元音（[ae-ae]和[epsilon-a-e]）以及点元音[i，a，u]。在其他工作中，点元音产生在更外围的位置相比，在IDS的ADS。然而，几乎没有证据表明过度发音本身（e。G. [i-I]是hypocarbitrary）。我们认为，全面的词汇为基础的hyperarticulation是不是IDS的必要功能。
Typically, the point vowels [i, a, u] are acoustically more peripheral in infant- directed speech (IDS) compared to adult- directed speech (ADS). If caregivers seek to highlight lexically relevant contrasts in IDS, then two sounds that are contrastive should become more distinct, whereas two sounds that are surface realizations of the same underlying sound category should not. To test this prediction, vowels that are phonemically contrastive ([i- I] and [eI-epsilon]), vowels that map onto the same underlying category ([ae-ae] and [epsilon-epsilon]), and the point vowels [i, a, u] were elicited in IDS and ADS by American English mothers of two age groups of infants (four- and eleven-month-olds). As in other work, point vowels were produced in more peripheral positions in IDS compared to ADS. However, there was little evidence of hyperarticulation per se (e. g. [i-I] was hypoarticulated). We suggest that across-the-board lexically based hyperarticulation is not a necessary feature of IDS.