Klein Harriet B, Liu-Shea May
New York University, New York, USA.
Lang Speech Hear Serv Sch. 2009 Jan;40(1):17-30. doi: 10.1044/0161-1461(2008/08-0008).
This study was designed to identify and describe between-word simplification patterns in the continuous speech of children with speech sound disorders. It was hypothesized that word combinations would reveal phonological changes that were unobserved with single words, possibly accounting for discrepancies between the intelligibility of single-word samples and that of continuous speech.
Four boys with developmental speech sound disorders provided samples of single words and continuous speech. Substitutions and deletions with single words formed the basis for determining 2 categories of between-word segment mismatches: observed and novel. Mismatches were attributed to one of 4 types of between-word simplifications reported for typical phonological development: between-word consonant deletion, between-word cluster reduction, between-word consonant sequence reduction, and between-word assimilation.
Continuous speech revealed observed and novel patterns. Segment mismatches occurred differentially among potential between-word simplification environments. The most frequently occurring novel pattern involved the deletion of a coda consonant within a between-word consonant sequence.
Children with speech sound disorders demonstrated substitutions and deletions between words in continuous speech that may not be predicted on the basis of single-word productions. The identification of potential contexts for such mismatches may serve as a framework for the assessment of continuous speech samples of children with speech sound disorders in health care and school settings.
本研究旨在识别和描述语音障碍儿童连续言语中的词间简化模式。研究假设词的组合会揭示单字中未观察到的语音变化，这可能解释了单字样本与连续言语可懂度之间的差异。
四名患有发育性语音障碍的男孩提供了单字和连续言语样本。单字中的替换和省略构成了确定两类词间音段不匹配的基础：观察到的和新出现的。不匹配归因于典型语音发展中报道的四种词间简化类型之一：词间辅音省略、词间音丛简化、词间辅音序列简化和词间同化。
连续言语揭示了观察到的和新出现的模式。音段不匹配在潜在的词间简化环境中差异出现。最常出现的新模式涉及词间辅音序列中韵尾辅音的省略。
语音障碍儿童在连续言语中表现出词间的替换和省略，这些在单字发音的基础上可能无法预测。识别此类不匹配的潜在语境可为在医疗保健和学校环境中评估语音障碍儿童的连续言语样本提供一个框架。
