Content Validation of the Handwriting Difficulties Screening Checklist for individuals with Autism Spectrum Disorder (HDSC-ASD) as per RPWD Act 2016.

The purpose of this study was to evaluate the content validity of the Handwriting Difficulties Screening Checklist for Autism Spectrum Disorder (HDSC-ASD), a screening tool designed to assess handwriting challenges in individuals with Autism Spectrum Disorder (ASD) as per RPWD Act 2016. The checklist consists of ten domains reflecting core aspects of handwriting performance. A panel of experts in occupational therapy, special education, and developmental disorders reviewed the tool for relevance, clarity, and representativeness. Content validity was assessed using the Item Content Validity Index (I-CVI) and Scale Content Validity Index (S-CVI/Ave). The results supported strong content validity for the tool, with all items achieving acceptable I-CVI values and an overall S-CVI/Ave of 0.92. These findings suggest that HDSC-ASD is a content-valid tool for screening handwriting difficulties in individuals with ASD.