Family Outcomes of a Community-Based Trial of Project ImPACT
Project ImPACT coaching sharpens provider and parent skills in community early intervention, yet four months was too short to see extra child communication gains.
01Research in Context
What this study did
Rieth et al. (2025) tested Project ImPACT in a community early-intervention program. They trained Part C providers to coach parents of toddlers with developmental delays.
The study used a randomized design. Half the families got Project ImPACT. The other half kept their usual services. The team tracked provider coaching quality, parent interactions, and child communication for four months.
What they found
Providers who learned Project ImPACT showed better coaching skills. Parents in the program used more positive interaction techniques. Yet child social-communication scores did not beat the usual-care group.
In short, the adults improved, but child gains stayed flat during the study window.
How this fits with other research
Stahmer et al. (2019) ran a similar Project ImPACT pilot and saw both parent and toddler gains. The key difference: the 2019 study was quasi-experimental and served kids flagged for autism risk. The 2025 RCT used tighter controls and broader developmental delay, so null child results may reflect design, not the method.
Sigmund et al. (2010, 2026) meta-analyses show intensive ABA can move IQ and adaptive scores in large samples. Project ImPACT is lighter-touch parent training, not 30-hour-week therapy, so smaller child change is expected.
Ferguson et al. (2020) proved community clinics can keep full EIBI going without a university. Rieth et al. extend that theme by showing provider coaching fidelity can also hold up in public Part C systems.
Why it matters
You now have evidence that a short staff training can lift coaching quality and parent skills in a real-world Part C program. If your agency needs a scalable way to improve parent engagement, Project ImPACT is worth adopting even if child communication data take longer to show. Track fidelity, give it time, and pair with more intensive services when big developmental jumps are the goal.
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02At a glance
03Original abstract
Caregiver-mediated approaches in early intervention can provide impactful support for families of young children with social communication needs. Project ImPACT (PI), a caregiver-mediated naturalistic developmental behavioral intervention, was tested for effectiveness in public early intervention (EI) programs in a randomized waitlist-control community trial across California. Participants included EI service providers (n = 47) and caregiver–child dyads (n = 125; ages 14–32 months). Families received services-as-usual (SAU) or PI following provider training in PI. Multilevel models were used to examine provider coaching, caregiver–child interactions, caregiver PI strategy use, parenting stress, self-efficacy in parenting, and child social communication outcomes across approximately four months of services. Provider use of evidence-based coaching significantly improved after PI training. Caregivers who received PI showed greater gains in some domains of parent–child interaction; PI fidelity scores, stress, and self-efficacy did not differ by condition. Child communication outcomes improved over time in both groups, but differences between conditions were not detected during the study time period. Training community EI providers in PI improved coaching quality and enhanced caregiver–child interaction, demonstrating feasible, scalable use of PI in community settings. Differential child-level effects were not detected, underscoring the need for larger samples and longitudinal follow-up.
Behavioral Sciences, 2025 · doi:10.3390/bs16010064