Effects of input quality on ASL vocabulary acquisition in deaf children

输入质量对聋哑儿童 ASL 词汇习得的影响

• 批准号: 10842024
• 负责人: Naomi K. Caselli
• 金额: $ 25.07万
• 依托单位: BOSTON UNIVERSITY (CHARLES RIVER CAMPUS)
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-05-08 至 2025-04-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10842024
• 关键词: American Sign Language; Characteristics; Child; Child Support; Cognition; Cognitive; Data; Data Set; Development; Diagnosis; Education; Environment; Exhibits; Exposure to; Family; Goals; Hearing; Language; Language Delays; Language Development; Learning; Modality; Neighborhoods; Pattern; Policies; Positioning Attribute; Poverty; Productivity; Provider; Research; Research Project Grants; Risk; Sampling; Shapes; Sign Language; Social Environment; Speech; Vocabulary; Work; autism spectrum disorder; clinical practice; deaf; density; experience; follow up assessment; improved; infancy; innovation; insight; language outcome; parent grant; phonology; programs; skills

This research project aims to document the factors that shape the trajectory of language acquisition among late signers, children who are learning a sign language and have early exposure to a rich language environment but exhibit delays in early vocabulary development. Because there have not been assessments to enable identification of late signers until recently, there are no studies documenting late signing. Under the parent grant, we developed an assessment of early vocabulary, and administered it to a large number of deaf children learning a sign language. From the data collected under the parent grant, we identified 51 deaf children with early exposure to sign language who nevertheless had delayed early vocabularies. The project has three specific aims: (1) to determine whether late signers go on to also have delays in ASL morphosyntax and vocabulary, and identify possible socio-environmental predictors of trajectories among late signers, (2) to compare effects of phonological neighborhood density in late and typically-developing signers, and (3) to use spontaneous language samples to create in-depth receptive and expressive language profiles to document the developmental sequelae of late signing. The proposed research is innovative in two ways. First, it seeks to disentangle the effects of modality-specific characteristics of late talking from those that are language-general or cognitive by documenting patterns of late signing. Second, this work will be the first empirical study providing insight to families and providers about sign language delays that cannot be attributed to delayed language exposure.

该研究项目旨在记录塑造语言习得轨迹的因素 手语迟到者、正在学习手语并较早接触丰富语言的儿童 环境，但早期词汇发展表现出延迟。因为还没有评估 直到最近才能够识别迟到的签名者，还没有研究记录迟到的签名。下 在家长资助下，我们开发了早期词汇评估，并将其应用于大量聋人 孩子们学习手语。根据家长补助金收集的数据，我们确定了 51 名聋人 早期接触手语但早期词汇量却迟缓的儿童。项目 具有三个具体目标：(1) 确定迟发手语者是否也会出现 ASL 形态句法的延迟 和词汇，并确定迟到签名者轨迹的可能社会环境预测因子，(2) 比较语音邻域密度对晚期手语者和典型发展手语者的影响，以及 (3) 使用 自发语言样本，创建深入的接受性和表达性语言配置文件，以记录 延迟签约的发展后遗症。拟议的研究在两个方面具有创新性。首先，它力求 将晚说话的特定情态特征与一般语言特征的影响区分开来 或通过记录迟签名的模式进行认知。其次，这项工作将是第一个实证研究 向家庭和提供者提供有关不能归因于延迟的手语延迟的见解 语言暴露。