Parents Rated ABA Significantly Less Acceptable Than OT and Speech. The Reasons Were Not About Effectiveness.
Eighty-seven Canadian parents scored three autism services on a validated acceptability framework. ABA came in lower, and the gap ran through ethics, therapist fit, and whether the therapy affirmed their child's identity.
Published in PLOS One on August 20, 2026, Caven and colleagues surveyed parents of autistic children in Canada about three services their children commonly receive: occupational therapy, speech-language pathology, and ABA-based therapies.
The survey was built on the Theoretical Framework of Acceptability, a validated instrument, and the same TFA constructs structured the qualitative content analysis. This is not a satisfaction poll.
The finding
Eighty-seven parents completed the survey. Acceptability scores were higher for OT and SLP than for ABA, and the difference was significant: F(2, 239) = 43.42, p < 0.01.
That is a large F for a sample this size. Whatever else is true, these parents were not ambivalent.
What drove it
Three TFA constructs carried the result, and each one names something concrete.
- Ethicality. Parents "shared concerns about potential harms of negative therapy experiences, emphasized the value of neurodiversity-affirming services and held mixed views on behavioural approaches."
- Perceived Effectiveness. Acceptability was contingent — it depended on parents being able to attribute improvements to the therapy, and on therapist fit. Gains that parents could not connect to the work did not buy goodwill.
- Self-Efficacy. Respondents reported the importance of therapist engagement with parents.
The authors conclude that "many parents are concerned with promoting a positive autistic identity for their children, including through therapies," and call for "shared definitions and goals for therapy between clinicians, parents/care partners, and autistic people."
The limits, stated honestly
Eighty-seven self-selected respondents in Canada, surveyed at one point in time, cannot be generalized to the US market or treated as a representative measure of how families feel about ABA. Survey respondents on contested topics skew toward people with strong views. The study does not measure clinical outcomes at all — only acceptability.
What it does measure, it measures with a validated framework and reports transparently, including the mixed views rather than a single verdict.
Why an operator should care right now
Two of the three drivers are within a provider's direct control this quarter: therapist fit and therapist engagement with parents. Neither requires a new payer contract or a rate increase. Both are workforce and supervision questions — caseload matching, RBT continuity, whether a BCBA is actually talking to the family or only to the data.
The third, ethicality, is the harder one, and it is not answered by pointing at effect sizes. Parents in this study were not primarily disputing whether ABA works. They were asking what it costs their child to receive it and whether the goals were ones they shared.
There is also a payer-facing reason to read this. States are being pushed by the August CMS toolkit toward outcome measurement, and parent-reported measures are the cheapest outcome instrument a state can adopt. If acceptability data becomes part of how ABA is evaluated, the field will be graded on exactly the constructs this paper says it scores worst on.