A look at “Behavioral approach to autism spectrum disorder: quality versus quantity in interventions” by Jaime Lin, Júlio César Claudino dos Santos and Cinara Ludvig Gonçalves (2026)
There’s a stubborn myth in autism support that therapy works like a potion: double the dose, double the sparkle. If ten hours a week is good, surely forty is better?
This review, written by Brazilian researchers for paediatricians, takes the cauldron off the boil.
What they found
Rather than running a new study, the authors gathered existing research to ask a simple question: does more time in behavioural support actually mean better results for autistic children?
Not necessarily. They draw heavily on a large 2024 analysis by Sandbank and colleagues, which combined many studies and found that hours per day, days per week and total hours of support weren’t consistently linked with better outcomes. The authors offer three reasons why:
- Everyone learns at their own pace, shaped by genetics, health conditions such as epilepsy, and how well support is delivered.
- Returns diminish. After a point, each extra hour adds less.
- Too much can backfire. Fatigue, overload and disengagement are real, as anyone who has sat through a three-hour meeting can confirm.
So what does make a difference? Support built around the individual and what their family actually values; consistent, well-supervised delivery; involving families so skills carry into everyday life; regular reviews of progress; and properly trained practitioners.
That last point gets special attention. In Brazil, anyone can call themselves a “behaviour analyst”, with no regulated training or standards. That’s rather like gluing a cone to a pony and calling it a unicorn. The authors also warn against the “throw everything at it” approach, where families juggle several uncoordinated therapies at once, often out of understandable worry about missing the one thing that might help.
A grain of glitter ✨
There’s plenty to like here, but a few things are worth bearing in mind.
This is a narrative review: the authors chose which studies to discuss rather than following a systematic search, so it’s a useful overview but more open to selective reading. They do mention one study (Frazier and colleagues, 2025) that found more hours linked to better outcomes, arguing that the effect shrinks once IQ is taken into account. The debate isn’t fully settled.
The review is also firmly rooted in Applied Behaviour Analysis (ABA), an approach many autistic adults and advocates have criticised, particularly where it aims to make autistic people appear less autistic. And it talks about “deficits” and “disorder” throughout, which sits uneasily with a neurodiversity-affirming view of autism as a difference rather than something broken.
Finally, its comments on regulation are about Brazil, though they’re not irrelevant here: behaviour analysts aren’t statutorily regulated in the UK either.
Why this matters
The central message is still worth championing: good support isn’t measured in hours, but in how well it fits the person in front of you. Whether you’re a parent weighing up options or an autistic adult thinking about support for yourself, it’s fair to ask why something is being recommended, how it will be tailored to you, and who is delivering it.
Quality over quantity. We’d happily put a horn on that.