The Delete Test: Which Parts of CBT for Adult ADHD Actually Worked

CBT for adult ADHD is a bundle of parts. In 2024 four researchers, Matsumoto, Hamatani, Kunisato and Mizuno, took the bundle apart in a network meta-analysis of the components inside CBT for BMJ Mental Health, and two came out on top for core symptoms: organisational strategies, and the third-wave work on acceptance and values.

Every other piece of evidence I read tells me what a coach should add. That one tells you what you could take out, which is the rarer permission. Call it the delete test.

Which parts of CBT for adult ADHD actually work?

Organisational strategies and acceptance-based work, in the only analysis to ask at the level of parts rather than whole programmes. Matsumoto and colleagues pooled 43 trials and ranked both the combinations and the single ingredients, with response on core ADHD symptoms as the outcome. Their starting point: nobody knew which pieces did the work, because CBT arrives with several at once.

Until that paper, the literature could tell a coach whether a whole programme beat a waiting list, and nothing finer. Adding something is cheap to justify, while taking something out needs a study, and until 2024 there wasn’t one to point at.

Should a package still open with psychoeducation?

Two good analyses disagree, and I cannot tell you which one is right.

Analysis	Psychoeducation
Matsumoto et al., BMJ Mental Health 2024	not among the parts that worked
Ostinelli et al., Lancet Psychiatry 2025, 113 trials, 14,887 adults	beat placebo on clinician-rated core symptoms, -0.77 (-1.35 to -0.18)

So the delete test comes back unresolved on the part most packages open with, which is a worse answer than either a yes or a no.

Clients have said the quieter half of this for years. One r/ADHD poster, working out whether therapy was worth the money, wrote: “I already know all that from the internet, in more depth than providers around me who aren’t specialised in ADHD.”

Explaining ADHD can move a clinician’s rating scale and still burn the first session, because knowing and doing are different problems.

Why has no ADHD coach heard of this?

Because the finding was published and then sat there. The 2023 protocol Hamatani and colleagues wrote for the dismantling work has been cited six times. In July I pulled 10,326 pieces of writing from 316 ADHD coaches, and this language shows up in six texts from six coaches, half of them folk versions of it.

Coaches are not being slow here. One paper in a specialist journal, with no guideline behind it and no coaching trial anywhere to attach it to, sits squarely in the middle tier of certainty. This is therapy research. Nobody has tested it as a coaching curriculum, and I am not telling you to rebuild one.

Permission to add something arrives every week, and permission to take something out arrived once, in 2024, in a paper six people have cited since.

Write down the one part you would cut first if the evidence told you to. If you cannot say why it is still in there, you have found the interesting part of your own package.

Questions people ask next?

What therapy is best for an adult with ADHD?

Nobody has tested personal fit, only whole programmes. Ostinelli and colleagues, pooling 113 trials and 14,887 adults in Lancet Psychiatry in 2025, found medication cut core symptoms while no drug improved quality of life. CBT held its benefit at longer follow-up, and a clinician makes that call.

What kind of behavioural therapy for ADHD in adults has the most evidence?

CBT adapted for ADHD. It goes after time management, organisation and planning rather than mood alone, which is why the American Academy of Family Physicians lists it as a well-supported non-drug option for adults. The 2024 component work sits one level down, inside that package.

Does this mean psychoeducation is useless?

No. One analysis leaves it out of the parts that worked; the larger one puts it ahead of placebo on clinician ratings. Treat it as unresolved, and keep it if your clients tell you it is doing something.