Lexical Effects in Typical Phonological Acquisition

描述（由申请人提供）：早期语音发展的一个标志是词间和词内变异的存在，这是传统语言学理论难以解释的现象。最近的证据表明，观察到的变异可能受到词汇发展的系统影响。这个项目的总体目标是研究词汇-语音在发展中的相互作用。具体而言，我们将研究典型发展幼儿的词频、邻域密度和习得年龄等词汇特征与单字产生的准确性和可变性之间的关系。该项目将包括一项基于纵向转录的调查（19-29个月），研究与WF、ND和ADA变量相关的生产准确性和可变性。采用的理论框架是基于使用的音系学，强调语言使用在音系系统构建中的作用。本研究的结果将增强我们对典型发育中词汇-语音相互作用的理解，进而帮助我们更好地理解语音缺陷的本质，并为我们决定适当的治疗方法和目标提供信息。

DESCRIPTION (provided by applicant): A hallmark of early phonological development is the presence of both inter- and intra-word variability, phenomena that traditional linguistic theories often have difficulty accounting for. Recent evidence suggests that observed variability may be systematically influenced by lexical development. The overall objective of this project is to investigate lexical-phonological interactions in development. Specifically, the lexical characteristics of word frequency (WF), neighborhood density (ND), and age-of-acquisition (AOA) will be studied in relation to the accuracy and variability of single word productions by typically developing toddlers. The project will consist of a longitudinal transcription-based investigation (19-29 months) of production accuracy and variability in relation to the variables of WF, ND, and ADA. The theoretical framework adopted is that of Usage-based phonology which emphasizes the role of language use in the construction of a phonological system. The results of this study will enhance our understanding of lexicalphonological interactions in typical development, which may in turn help us to better understand the nature of phonological deficits and will inform our decisions regarding appropriate treatment methods and targets.