<b>Comparative Content Validity of the Thai version of the Modified Checklist for Autism in Toddlers, Revised with Follow-Up (M-CHAT-R/F) and Thai Diagnostic Autism Scale (TDAS): Enhancing Early Detection of Autism Spectrum Disorder in High-Risk Children</b>

This study aimed to assess the screening validity of the Thai M-CHAT-R/F in identifying ASD among young children with language delays, using the Thai Diagnostic Autism Scale (TDAS) as the reference standard.