The use of four types of psychological state words (physiological, emotional, desire, and cognitive) during mother-child play sessions at ages 3, 4, and 5 years was examined in 30 children diagnosed with delayed expressive language at 24-31 months and 15 age-matched comparison children with typical development. The children's mean length of…

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…