NOTES AND DISCUSSION PAPERS: 2: Parental speech to language delayed children: a home intervention study

<jats:title>Abstract</jats:title><jats:p>The study aimed to change a mother's verbal interaction with her language delayed twin boys in order to improve the language model which she provided. A single subject research design was used to evaluate the effects of treatment in which mother played language games with one of the twins. Home observations were conducted in which all of the twins' utterances were recorded and the mother's verbal behaviour was coded. Results showed that mother substantially increased her level of verbal interaction with the twins and also increased the proportion of her statements and questions relative to demands. In addition, the twins increased the number and length of their utterances in response to treatment. Further, the changes in both mother's and the twins' verbal behaviour generalized to extra‐treatment settings.</jats:p>