AI Article Synopsis
- Vocabulary is essential for language development, and the ASL-CDI 2.0 is an updated tool that assesses early ASL vocabulary for children with deaf parents.
- It allows for widespread online administration and includes features like videos to demonstrate signs, covering receptive and expressive vocabulary.
- The study validated the ASL-CDI 2.0 with a sample of 120 deaf children, showing trends such as vocabulary growth with age, a noun bias in early vocabulary, and differences between receptive and expressive skills.
Article Abstract
Vocabulary is a critical early marker of language development. The MacArthur Bates Communicative Development Inventory has been adapted to dozens of languages, and provides a bird's-eye view of children's early vocabularies which can be informative for both research and clinical purposes. We present an update to the American Sign Language Communicative Development Inventory (the ASL-CDI 2.0, https://www.aslcdi.org ), a normed assessment of early ASL vocabulary that can be widely administered online by individuals with no formal training in sign language linguistics. The ASL-CDI 2.0 includes receptive and expressive vocabulary, and a Gestures and Phrases section; it also introduces an online interface that presents ASL signs as videos. We validated the ASL-CDI 2.0 with expressive and receptive in-person tasks administered to a subset of participants. The norming sample presented here consists of 120 deaf children (ages 9 to 73 months) with deaf parents. We present an analysis of the measurement properties of the ASL-CDI 2.0. Vocabulary increases with age, as expected. We see an early noun bias that shifts with age, and a lag between receptive and expressive vocabulary. We present these findings with indications for how the ASL-CDI 2.0 may be used in a range of clinical and research settings.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7872468 | PMC |
| http://dx.doi.org/10.3758/s13428-020-01376-6 | DOI Listing |
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