Objective: This article describes a controlled, neuropsychological intervention study in adult ADHD. We examined whether adults with ADHD would benefit from a structured course based on Goal Management Training (GMT). The comprehensive course also included psycho-education on the important aspects of executive functioning as well as counseling with respect to coping behaviors. Method: The intervention group was compared with a control group of patients who received psycho-education only (n = 12 and n = 15, respectively). The effects of the intervention were evaluated using subjective and objective test measures. In addition, a structured preassessment, an evaluation, and a group comparison were carried out by an experienced clinician, who was blinded to the intervention itself. Results: The results of the structured clinical interview obtained in the active intervention group were significantly better in the intervention group than those of the control group. Conclusion: The findings suggest that the combination of GMT with psycho-education and counseling may have validity for adults with ADHD.