Materials and Methods: A single case experimental design (multiple baseline) was used to examine the influence of a 12 weeks intervention of CO-OP (twice a week) on Six children with ADHD. Each child selected three different goals to practice during intervention. Outcome measures included the Canadian Occupational Performance Measure (COPM), and the Bruininks-Oseretsky Test of Motor Proficiency and Performance (BOTMP). At first and prior to the intervention, the COPM was administered to the children and parents separately to obtain a rating of performance and satisfaction of the child in selective goals. The CO-OP intervention protocol was based on Polatajko and colleagues' work in 2001. During intervention, children were taught the global problem solving strategies helping them to discover and perform domain-specific strategies. Therapist and family also supported children to achieve the performance of selected goals.

Results: The results of this study demonstrated improvements in both goals and motor performance in the participants due to the intervention. These results support the use of the CO-OP with children with ADHD.

Conclusion: Further research into the application of CO-OP with children with ADHD is warranted based on preliminary positive findings regarding the efficacy of this intervention to address motor-based performance difficulties.