The effect of early autism intervention on parental sense of efficacy in a randomized trial depends on the initial level of parent stress.
Annette Estes, Paul Yoder, John McEachin and 6 others
PMID 33858234WHAT IT FOUND
Neither autism intervention style nor assigned intensity alone changed parent efficacy over 12 months.
Initial parent stress changed the intensity effect: lower-stress parents gained more with 25 hours/week, higher-stress parents with 15 hours/week.
Key findings
01Among 85 families who completed both questionnaires, assigned treatment style and intensity did not independently change parent sense of efficacy.
02Parent sense of efficacy increased over the 12-month treatment period independent of assigned intensity and style.
03Baseline parent stress moderated assigned intensity: lower-stress parents showed larger efficacy gains with 25 hours/week, higher-stress parents with 15 hours/week.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
Parent efficacy was not the primary outcome of the larger randomized trial. 87 families were randomized, and 85 completed both questionnaires. The intensity-by-stress finding is a secondary moderation analysis and needs replication. Parents knew their assigned intensity and style, and parent efficacy was self-reported. All groups received active intervention, so the study cannot compare parent efficacy with no treatment. The trial used university-based teams and parents who were 56% white and non-Hispanic, so results may not apply to community settings. Assigned hours were not fully delivered: families received 12.42 or 20.82 hours per week on average. Parent stress was measured only at baseline, before a year of intensive home intervention. Each group received a package of therapist-delivered child treatment plus parent meetings or coaching, so the study cannot separate which component affected parent efficacy.
Declared interests
The supplied metadata lists Research Support, N.I.H., Extramural. No author conflict-of-interest declaration is provided in the article text.
The easy way to misread this
Do not read this as a tested rule that high-stress parents should receive fewer child treatment hours. Parent efficacy was a secondary outcome, the intensity-by-stress effect was a moderation finding, and the authors state it requires replication.