Specialist-mediated play therapy for toddlers with language developmental delay: a single-center observational pilot study.

Families chose their own group rather than being allocated by chance, so children whose parents picked play therapy may have differed in ways the study did not measure, and this can inflate the apparent advantage. The play therapy group differed from the others in more than the play method: it had a developmental-behavioural paediatrician designing and supervising every case and more therapist contact overall, so the contribution of the play approach itself cannot be separated from how much expert time these children received. One centre, 180 children, and a single outcome measure (one language quotient from one scale), with no expressive vocabulary, receptive language or parent-reported communication measures to check the result against. Adherence in the parent-led group rested on logs the parents wrote themselves, and the recorded fidelity was lower there (78%) than in the therapist-delivered groups (92% and 89%), so that arm may have been delivered less fully than intended. Follow-up stopped at 12 months, so nothing is known about later language, literacy or school performance. The subgroup findings on baseline severity, age and gender come from small groups and the authors describe them as exploratory.

The authors declared that no financial support was received for this work or its publication. No sponsor involvement in design, analysis or writing is reported.

Do not read this as proof that specialist-mediated play therapy works better than standard speech and language therapy. The families chose their own groups instead of being assigned, and the play group also had a paediatrician designing every child's programme and more professional contact than the other two arms, so the play method cannot be separated from how much expert time those children got.