en کاردرمانی Occupational therapy پژوهشي Original Research Articles <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><strong>Objectives</strong>: Attention-deficit/hyperactivity disorder (ADHD) is highly common in children and can continue lifelong. Looking at children&#39;s participation in detail is excessively important since it affects their quality of life (QoL). The Iranian children&#39;s participation assessment scale is a questionnaire that determines children&#39;s participation and is primarily built for children with cerebral palsy. This study aims to estimate the psychometric properties of this questionnaire for children with ADHD.<br> <strong>Methods</strong>: The content validity was estimated using the Lawshe method with 8 occupational therapy experts (5 with a PhD and 3 with a MA degree with at least 5 years of experience). Test-retest reliability was done using an intraclass correlation class (ICC) in a two-week interval among 30 children with ADHD.<br> <strong>Results</strong>: Regarding content validity, CVI was found to be 1 for all items, and CVR values were between 0.75 and 1 for all items. Regarding reliability, the ICC result was 1 for all the items.<br> <strong>Discussion</strong>: No item was omitted in the validity part, and all items showed good reliability. The test is valid and reliable for children with ADHD.</span></span></span></div> Attention deficit hyperactivity disorder, Participation, Occupational therapy, Psychometrics 57 64 http://irj.uswr.ac.ir/browse.php?a_code=A-10-761-3&slc_lang=en&sid=1 Minoo Dabiri Golchin Minoodabiri@yahoo.com 0000-0002-8881-6690 No Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran. Hooshang Mirzaie hooshang_mirzaie@yahoo.com 0000-0001-7616-4288 Yes Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran. Seyed Ali Hosseini alihosse@gmail.com 0000-0001-9126-3612 No Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran. Ebrahim Pishyareh pishyareh.cog@gmail.com 0000-0002-6005-4874 No Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran. Enayatollah Bakhshi bakhshi@razi.tums.ac.ir 0000-0001-8049-0190 No Department of Biostatistics, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.