Minoo Dabiri Golchin - Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.
Hooshang Mirzaie - Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.
Seyed Ali Hosseini - Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.
Ebrahim Pishyareh - Department of Occupational Therapy, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.
Enayatollah Bakhshi - Department of Biostatistics, School of Rehabilitation Sciences, University of Social Welfare and Rehabilitation, Tehran, Iran.

Objectives: Attention-deficit/hyperactivity disorder (ADHD) is highly common in children and can continue lifelong. Looking at children's participation in detail is excessively important since it affects their quality of life (QoL). The Iranian children's participation assessment scale is a questionnaire that determines children'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. Methods: The content validity was estimated using the Lawshe method with ۸ occupational therapy experts (۵ with a PhD and ۳ with a MA degree with at least ۵ years of experience). Test-retest reliability was done using an intraclass correlation class (ICC) in a two-week interval among ۳۰ children with ADHD. Results: Regarding content validity, CVI was found to be ۱ for all items, and CVR values were between ۰.۷۵ and ۱ for all items. Regarding reliability, the ICC result was ۱ for all the items. Discussion: No item was omitted in the validity part, and all items showed good reliability. The test is valid and reliable for children with ADHD.

Attention deficit hyperactivity disorder, Participation, Occupational therapy, Psychometrics