Improving Functional Language and Social Motivation with a Parent-Mediated Intervention for Toddlers with Autism Spectrum Disorder.

Researchers taught 12 parents of 15- to 21-month-old toddlers with early ASD signs how to use PRT at home. Each family got six one-hour coaching sessions spread over six weeks. The team tracked the children’s new words and social bids during play with mom or dad.

All the toddlers gained new words. Most also started looking at parents, sharing toys, and imitating without being asked. These social gains showed up even though the coaches never trained those skills directly.

Ouyang et al. (2024) pooled 32 trials and found parent PRT works best after families master simpler programs like ImPACT. The brief format here matches their ‘step-two’ slot.

Higgins et al. (2021) ran a similar 12-week parent PRT plan with preschoolers who had delays but no ASD label. Both studies saw the same jump in expressive language, showing the method crosses diagnostic lines.

Stewart et al. (2018) moved PRT from living rooms to school playgrounds. Staff coached classmates to give the same pivotal opportunities; autistic students doubled their recess interaction. Together the three studies trace a clear line: PRT can travel from parent-toddler to peer-schoolyard with steady social gains.

You can start PRT with families as soon as red flags appear. Six short sessions fit busy schedules and still boot-strap both words and social interest. Use the Ouyang roadmap: begin with an easy parent program for fidelity, then layer in these brief PRT lessons to widen language and play circles before age two.