Efficacy of the Korean PEERS® for Preschoolers (PEERS®-PS-K) Social Skills Intervention: A Randomized Controlled Trial for Children With Autism Spectrum Disorder

Inclusion Criteria

• •Children aged 4 to 6 years (at least 4 years 0 months and less than 7 years diagnosed with Autism Spectrum Disorder (ASD) through standardized diagnostic tools(K-ADOS-2 / K-ADI-R).
• •Verbal Intelligence Quotient (VIQ) of 70 or higher on the Korean Wechsler Preschool and Primary Scale of Intelligence (K-WPPSI).
• •Native Korean speakers with sufficient verbal fluency to communicate in full sentences appropriate for their age.
• •Capable of participating in group activities and language-based interventions as determined through a screening procedure.
• •Parents or legal guardians who understand the study's purpose and provide voluntary informed consent for both themselves and their child.