The experimental intervention is manualized, follows an illustrated workbook for parents, and uses individualized video-feedback, modeling, and coaching strategies to help parents establish play interactions that promote communication. All participants take part in comprehensive baseline and post-intervention/post-active control assessments, as well as 6- and 12-month follow up assessments. Families in the active control group will also be invited to participate in an oral feedback session to discuss the results from these assessments. Children's involvement in other forms of intervention will be monitored using a validated intervention log so that the moderating effects of these treatments can be examined.
By targeting parent-child interactions, the current intervention ensures that new child behaviors generalize beyond the immediate context of the intervention and are maintained over time (Schreibman, 2000). In addition, by involving parents in the treatment of their children (e.g., by establishing a daily playtime routine), the current intervention ensures that the intervention strategies are implemented with sufficient intensity for causing developmental change (National Research Council, 2001).
