Fifty-seven children, aged 23-28 months, were assessed using the Sequenced Inventory of Communication Development, mean length of utterance, and Minnesota Child Development Inventory (MCDI). The MCDI Expressive Language scale was found to be a valid predictor of expressive language. The MCDI Comprehension-Conceptual scale appeared to assess both…

A 20-minute videotape sample was obtained of the language interactions between 20 Down syndrome children (ages 38 to 107 months) and their mothers during informal playtime. Linguistic utterances of mothers and children were coded according to the following language categories: query, declarative, imperative, performative, feedback, imitation,…

Maternal language directed to 21 nonhandicapped, 21 Down syndrome, and 19 language impaired preschool children was examined. The three groups (all Caucasian and middle-class) were matched in mean length of utterance (MLU) and in developmental skills as measured on the Vineland Adaptive Behavior Scale. Mother-child language interaction was…