Effects of input quality on ASL vocabulary acquisition in deaf children

该研究项目旨在记录以下因素中影响语言习得轨迹的因素 迟到者，正在学习手语并很早就接触到丰富语言的儿童 但在早期词汇发展中表现出延迟。因为还没有评估到 启用延迟签名者识别直到最近，还没有记录延迟签名的研究。在.之下 在家长资助的情况下，我们开发了一种早期词汇评估，并对大量聋人进行了测试 学习手语的孩子们。从家长助学金下收集的数据中，我们确定了51名聋人 早期接触手语的儿童，尽管如此，他们的早期词汇仍有延迟。该项目 有三个具体的目标：(1)确定已故签名者是否也有ASL形态句法上的延迟 和词汇，并确定在已故签字者中可能的社会环境轨迹预测因素，(2)到 比较语音邻域密度在发育迟缓和典型发育者中的作用，以及(3)使用 自发的语言样本，以创建深入的接受性和表现力强的语言配置文件，以记录 迟签约的发育后遗症。这项拟议的研究在两个方面具有创新性。首先，它寻求 区分晚说话的特定情态特征和一般语言特征的影响 或通过记录延迟签名的模式来认知。其次，这项工作将是第一次实证研究 向家庭和提供者提供关于手语延迟的洞察力，这些延迟不能归因于延迟 语言接触。

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.