Table 3.

Inclusion and exclusion criteria.

Inclusion criteria

1. Articles needed to report on empirical data obtained from ACT treatment on individuals having ADHD. 2. Published studies that used ACT or a combination of ACT and other therapies. 3. ACT treatment based on at least 2 of the 6 core ACT processes: acceptance, contact with the present moment, cognitive defusion, self-as-context, values, and committed action. 4. Studies that specifically focused on individuals having ADHD. 5. Studies that had at least one outcome measure to assess effectiveness of intervention. 6. Studies that were based on quantitative, qualitative, correspondences, case report, letter to editors, and mixed-methods. 7. Studies completed in English.

Exclusion criteria

1. Summaries, discussion papers, book chapters and literature reviews 2. Studies published in languages other than English. 3. Did not clearly use ACT techniques.