What the evidence actually says.
Written for a parent who wants to know whether this is real, and for a physician who wants to know what we will and will not claim.
Where it comes from
ABA applies the experimental analysis of behavior — how consequences shape what people do — to problems that matter in someone's life. The applied part is the point: a procedure only counts if it changes something the family cares about, in the place where it matters.
What the evidence supports
ABA is the most studied behavioral treatment for autism, which is why Florida Medicaid and most commercial plans cover it. The research supports gains in communication, social skills and daily living, and reductions in behaviors that interfere with learning or safety.
What it does not support
It does not support a prediction about any individual child. It does not support a fixed number of hours as correct for everyone. And it does not support the idea that more hours are automatically better — intensity is a clinical decision, not a sales figure.
The criticism, stated fairly
Some autistic adults have described older forms of ABA as forcing compliance and teaching children to suppress how they naturally are. That criticism is serious and it changed practice. Modern, assent-based ABA — the practice we hold ourselves to — treats a child's refusal as information rather than an obstacle, honours breaks, and asks of every goal whether it is worth something to the child and not only convenient for the adults.
If a goal on your child's plan does not pass that test, say so. Removing it is a clinical conversation, not a complaint.
How we describe behavior
In terms anyone in the room could agree on. "Left the table four times during the 20-minute activity" is measurable and checkable. "Was defiant" is an interpretation, and two people will score it differently — which makes it useless as data and unfair to the child.
Next: how data drives the plan
Collecting numbers is easy. Changing treatment because of them is the part that matters.
Ask the clinical questions before you commit.
A BCBA will answer them. Nobody will sell you an outcome.
