Hardin M A, Morris H L, Van Demark D R
J Commun Disord. 1986 Dec;19(6):461-73. doi: 10.1016/0021-9924(86)90021-3.
This study was designed as a partial test of a previously hypothesized model for a subgroup of cleft speakers who show marginal velopharyngeal competence during speech. Specifically, speakers in the model were hypothesized to show minimal but consistent nasalization of speech by several criteria. Fifty-two subjects were selected because they met one of the criteria for the model, lateral x-ray films on /s/ that showed touch closure or a small velopharyngeal opening. The subjects were then examined by the other five criteria used for defining the hypothesized model, and were found to meet, in the majority, fewer than three. These findings indicate that lateral x-ray films are not sufficient for identifying this diagnostic subgroup, if it exists. Another possible conclusion is that the model proposed is too simplistic and that cleft palate speakers with marginal velopharyngeal competency typically show more variability in speech performance than was originally implied in the model.
本研究旨在对之前针对腭裂患者亚组所假设模型进行部分检验，该亚组患者在言语过程中表现出边缘性腭咽功能不全。具体而言，模型中的患者被假设根据若干标准表现出最小但持续的言语鼻音化。选择了52名受试者，因为他们符合模型的一项标准，即/s/音的侧位X光片显示接触闭合或腭咽开口较小。然后根据用于定义假设模型的其他五项标准对受试者进行检查，结果发现大多数受试者符合的标准少于三项。这些发现表明，如果存在这个诊断亚组，侧位X光片不足以识别该亚组。另一个可能的结论是，所提出的模型过于简单，边缘性腭咽功能不全的腭裂患者在言语表现上通常比模型最初所暗示的具有更大的变异性。
