Table 1 Participant Information

	Participant A	Participant B	Participant C
Age	7 years old	7 years old	7 years old
Gender	Male	Male	Female
K-CARS-2*	43	30.5	26.5
K-WPPSI-IV**	42	41	42
PRES***	Receptive: 26mo /Expressive: 30mo	Receptive: 23mo /Expressive: 26mo	Receptive: 21mo /Expressive: 22mo
Key Linguistic Characteristics	• Capable of making requests in sentences and engaging in simple conversational exchanges.• Demonstrates textual and transcription responses.• Can describe three sequential pictures in sentences• Exhibits both immediate and delayed echolalia.	• Capable of making requests in sentences and simple conversational exchanges.• Shows partial textual responses• Exhibits both immediate and delayed echolalia.	• Capable of making requests in sentences and simple conversational exchanges.• Demonstrates textual and transcription responses• Exhibits both immediate and delayed echolalia.• Response rates tend to fluctuate based on their daily physical condition.

Korean Childhood Autism Rating Scale-Second Edition
Korean-Wechsler Intelligence Scale for Children-fourth Edition
Preschool Receptive-Expressive Language Scale