Reliability and Validity of CCISO for Diagnosis of Autism Spectrum Disorder

The investigators designed the Child-Caregiver Interaction Observation Scale（CCIOS）to assess social communication behaviors, stereotyped behaviors for children with autism spectrum disorder(ASD) via a 20-min video of interactions between a caregiver and a child. The original CCIOS coding scheme consists 23 items. The score range for each item is 0-4, with higher scores being indicative of more atypical behavior. The aim of the study is to determine items for inclusion in the final CCIOS coding scheme through exploration of item correlations, establish the cutoff score of CCIOS for ASD and evaluate the reliability and validity of CCIOS. The reliability evaluation include test-retest reliability and inter-rater reliability. DSM-5 criterion is used as the gold standard. Validity is assessed by determining the correlation and consistency between CCIOS and DSM-5 criterion.