Project ImPACT for Toddlers: Pilot Outcomes of Community Adaptation of an Intervention for Autism Risk
Community Part C staff can teach parents PIT strategies that quickly brighten parent-toddler play, even if child communication gains need more time.
01Research in Context
What this study did
Stahmer and team asked Part C early-intervention staff to coach parents of toddlers showing autism risk. The program, Project ImPACT for Toddlers (PIT), teaches parents to play, imitate, and talk in ways that spark social communication.
Families received the usual county services or PIT added on top. Researchers then watched parent-child play and scored the toddlers’ social and language skills.
What they found
Parents who got PIT showed smoother, richer play with their kids than the usual-care group. The toddlers also made big jumps in social-communication skills, though the difference did not reach statistical significance in this small pilot.
How this fits with other research
The 2025 follow-up by Rieth et al. ran a larger RCT of the same PIT program. They again saw better parent interaction and provider coaching quality, but child communication gains matched services-as-usual. Together the two studies show parent behavior can improve quickly while child change may take longer or need more intensity.
Pacia et al. (2021) reviewed eight parent-mediated NDBI trials and found consistent social-communication benefits. Their synthesis supports the positive parent findings seen here, reminding us that child outcomes often emerge later.
Guthrie et al. (2023) tested an earlier-start rule: begin parent coaching at 18 months instead of 27 months. They saw clear child gains, hinting that timing, not just method, drives toddler progress.
Why it matters
You can train Part C providers to deliver PIT tomorrow. Expect parents to warm up, imitate, and stay face-to-face faster than with usual care. Track parent interaction as your first win; plan longer follow-up or booster sessions if child communication is the next target.
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Pick one PIT micro-skill (e.g., imitate and narrate) and script it for parents to practice during the first five minutes of today’s session.
02At a glance
03Original abstract
This study reports child and family outcomes from a community-based, quasi-experimental pilot trial of Project ImPACT for Toddlers (PIT). PIT is a parent-mediated, naturalistic, developmental behavioral intervention for children with or at-risk for autism spectrum disorder developed through a research community partnership. Community early interventionists delivered either PIT (n=10) or Usual Care (UC; n=9) to families based on Part C assigned provider. Twenty-five families participated, with children averaging 22.76 months old (SD=5.06). Family and child measures were collected at intake, after three months of service and after a three-month follow-up. Results indicate significantly greater improvements in positive parent-child interactions for PIT than UC families, as well as large, but non-significant, effect sizes for PIT families in children’s social and communication skills.
Autism, 2019 · doi:10.1177/1362361319878080