The use of lexical-phonological profiling to predict short-term speech sound norm

描述（由申请人提供）：本项目的总体目标是使用词汇-音系分析来改善2岁半至4岁轻度至中度语音习得延迟儿童的临床诊断和预后。第一个具体目的是从2- 4岁有和无语音障碍儿童的大样本中获得关于言语产生能力和词汇能力预期关系的规范性数据。第二个具体目标是确定观察到的言语产生能力和词汇能力之间的关系在多大程度上预测持续的言语延迟或正常的发音。这些目标将通过使用常用的标准化测试来实现，以确定在2岁半至4岁之间的大量具有人口统计学代表性的儿童样本中表达和接受词汇能力和发音能力。这些信息将用于建立关于词汇和发音能力之间预期关系的规范性数据。在初步评估后的6个月和1年，将对发音测试得分低于正常范围的儿童进行随访评估，以确定观察到的语音-词汇关系是否可以预测短期语音正常化。考虑到词汇和语音能力在典型发展过程中的联系，我们可以预测，词汇能力和语音产生能力之间存在较大分离的儿童在没有干预的情况下，短期语音正常化的可能性要小于在这两个方面都有相应能力的儿童。所获得的信息将有助于临床医生对轻度至中度语音习得延迟的幼儿进行决策过程，并将代表一种语音和语言延迟鉴别诊断的创新方法。

DESCRIPTION (provided by applicant): The overall objective of this project is to use lexical-phonological profiling to improve clinical diagnostics and prognostics for children between 2 1/2 - and 4-years with mild to moderate delays in speech sound acquisition. The first specific aim is to obtain normative data regarding the expected relationship between speech production ability and vocabulary ability from a large sample of 2- to 4-year-old children with and without speech sound disorder. The second specific aim is to determine to what extent the observed relationship between speech production ability and vocabulary ability is predictive of continued speech delay or normalized articulation. These aims will be achieved by using frequently used standardized tests to determine expressive and receptive vocabulary ability and articulation ability in a large, demographically representative sample of children between the ages of 2 1/2 and 4 years. This information will be used to establish normative data regarding the expected relationship between vocabulary and articulation ability. Follow-up assessment with children who score below normal limits on the articulation test will be conducted at 6 months and 1 year post initial evaluation to determine whether the observed phonological-lexical relationship is predictive of short-term speech sound normalization. Given the well-established connection between vocabulary and phonological ability in typical development, it is predicted that children with a large dissociation between vocabulary ability and speech production ability will be less likely to experience short-term speech sound normalization without intervention than children with more commensurate abilities in each area. Information obtained will assist clinicians in the decision making process for young children with mild to moderate delays in speech sound acquisition and will represent an innovative method for differential diagnosis of speech and language delays.