Item Analysis of The ASD – Daily Living Skills Scale for Children with Autism Spectrum Disorder

Abstract

An item analysis is a necessary process in the development and standardization process of any measurement instrument. The current paper set out to examine the items of the ASD-Daily Living Skills Scale that have been developed to determine daily living skills in children with Autism Spectrum Disorder. The scale comprised of 76 items that represented six dimensions of daily living skills. The sample consisted of 20 children with Autism Spectrum Disorder of 4-10 years old chosen based on purposive sampling. Analysis of the item was done with the help of the item difficulty index and the discrimination index. The findings showed that the majority of the items were of reasonable difficulty with values of 0.34 to 0.72 and discrimination index scores of above 0.30 and therefore good quality of items. Cronbach alpha was used to determine the reliability of the scale, and it demonstrated that the scale had high internal consistency. The results have validated that ASD- Daily Living Skills Scale is a valid and reliable instrument in the evaluation of the daily living skills in children with Autism Spectrum Disorders.