Importance: Adults with attention deficit hyperactivity disorder (ADHD) often experience chronic challenges in their life roles. There is a need for evidence-based occupational therapy interventions to help enhance their functioning. Objective: To determine the preliminary effectiveness of the Cognitive–Functional Intervention for Adults (Cog–Fun A), a metacognitive–functional occupational therapy tool for the improvement of occupational performance (OP) and quality of life (QoL) in adults with ADHD. Design: One-group pretest–posttest design with a 3-mo follow-up. Setting: Community setting in Jerusalem, Israel. Participants: Fourteen adults, ages 18–60 yr, with a valid diagnosis of ADHD and an indication of executive function (EF) impairment. Intervention: Participants received 15 1-hr weekly sessions that addressed self-awareness of strengths and challenges through education and guided discovery as well as strategy acquisition and implementation within a context of occupational goal attainment. Outcomes and Measures: The Behavioral Rating Inventory of Executive Function–Adult version, an adult ADHD QoL measure, the Canadian Occupational Performance Measure, and the Self-Regulation Skills Interview were administered. Results: Twelve participants completed the intervention. Posttreatment scores revealed statistically significant improvements in EF, awareness, OP, and QoL. Gains in QoL showed a modest reduction at the 3-mo follow-up. Conclusions and Relevance: The Cog–Fun A is a promising intervention for improving OP and QoL among adults with ADHD and should be investigated further.
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