Effectiveness of Parent Education in Pivotal Response Treatment on Pivotal and Collateral Responses.

Each study analysed only 13 parent-child dyads, and response varied widely, so this cannot show how the approach works for a larger or more varied group. The two models were separate single-case studies; parents and children were not randomly assigned to group versus individual education, so the studies cannot compare which model is better. Children also received milieu therapy, speech-language therapy, art therapy, family therapy, pharmacological interventions, or physiotherapy, so the effect of parent education in PRT alone cannot be separated from the other treatments. Interobserver agreement was acceptable on average but fell below 80% for many videotapes, and some audio quality was poor, so outcome counts may be inaccurate. Parental stress and self-efficacy were measured only before and after with parent questionnaires, not repeatedly or with objective methods. In the group study, parents videotaped fewer practice sessions than instructed, so low adherence may explain the smaller child effects.

Do not read these small single-case studies as proof that PRT works for all children with ASD. Children also received milieu therapy, speech-language therapy, art therapy, family therapy, pharmacological interventions, or physiotherapy, and the contribution of any single component cannot be separated.