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

描述(由申请人提供)：该项目的总体目标是使用词汇-音系学分析来改善2岁半至4岁儿童的临床诊断和预后，这些儿童在语音获得方面存在轻度到中度的延迟。第一个具体目标是从2-4岁有或没有言语发音障碍的儿童中获得关于言语产生能力和词汇能力之间预期关系的标准化数据。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示着持续的言语延迟或正常的发音。这些目标将通过使用经常使用的标准化测试来确定在2岁半至4岁的儿童中具有人口统计学代表性的大样本的表达和接受词汇能力和发音能力。这些信息将被用来建立关于词汇和发音能力之间预期关系的标准数据。对于清晰度测试得分低于正常限值的儿童，将在初步评估后6个月和1年进行后续评估，以确定观察到的语音-词汇关系是否预示着短期语音正常化。鉴于词汇和语音能力在典型发展阶段之间的密切联系，据预测，词汇能力和言语产生能力之间存在较大分离的儿童，在没有干预的情况下，短期内语音正常化的可能性将低于在这两个领域都有更多相称能力的儿童。所获得的信息将有助于临床医生对语音习得有轻度到中度延迟的幼儿的决策过程，并将代表一种鉴别诊断语音和语言延迟的创新方法。

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.