Vocabulary is an essential component in language learning. In addition to its relationship with other language skills, such as pronunciation (form), reading (meaning), and grammar (use), vocabulary is required for language proficiency. In parallel, language learners must be equipped with specific amounts of vocabulary to comprehend texts of…

This study evaluated 9 computer-generated measures of children's language production, based on 24 children with specific language impairment and 24 normally developing children, ages 24-50 months. Three measures possessed desirable developmental and diagnostic characteristics: mean syntactic length, total number of words, and number of different…