Table 2 Information of Child Participants

Participant	Chronological Age (Years)	Sex	Disability Type	K-CDI Developmnetal Age1) (Years)	K-CARS2-ST2) (Score)	K-SIB-R3)
						Social Age4) (Years)	Support Level5) (Score)
A	6.8	Male	ASD6)	1.8	42	1.0	Frequent (50)
B	6.2	Male	ASD	3.4	36	3.2	Frequent (46)
C	4.3	Male	ASD	2.6	30.5	2.6	Frequent (47)

Notes.
Korean Child Development Inventory, 2nd Ed. (K-CDI): Interpreted as borderline (-1.5 to -2.0 SD) or delayed (-2.0 SD and below) (Kim & Shin, 2010)
Korean Childhood Autism Rating Scale, Second Edition (K-CARS2-ST): Scores interpreted as autism risk (≥30), medium risk(30-36.5), or high risk (≥37) (Lee, Yoon & Shin, 2019)
Korean Scales of Independent Behavior-Revised (K-SIB-R) (Paik, Lee & Cho, 2007)
Social age indicates the equivalent age score reflecting the child’s performance compared to same-age peers.
Support level: Six levels -Pervasive(1-24), Extensive(25-39), Frequent(40-54), Limited(55-69), Intermittent(70-84), or Rarely/Not Needed (85-100)
Autism Spectrum Disdorder (ASD)