Table 1: Participant demographic information.

Child 1Child 2Child 3Child 4

Age6 years, 7 months8 years, 11 months6 years, 1 month7 years, 11 months
CARS score32.532.53033
Nonverbal IQ98111139119
SiblingsBrother (9 years, 5 months)Sister (6 years, 1 month)NoneSister (9 years, 11 months)
Mother’s education levelBachelor degreeDoctoral degreeBachelor degreeBachelor degree
Father’s education levelPostgraduate degreeBachelor degreeBachelor degreeBachelor degree
Primary language spoken at homeEnglishMandarin ChineseMandarin ChineseEnglish
Extracurricular activitiesWeekly 1 : 1 tutoring for academic subjectsWeekly swimming class, cooking class, and therapeutic horseback ridingWeekly social skills group for children with autismNone
Baseline length3 sessions4 sessions5 sessions6 sessions

Abbreviations: CARS: Childhood Autism Rating Scale; [25], ASD: Autism Spectrum Disorder; PDD-NOS: Pervasive Developmental Disorder, not otherwise specified. Note: nonverbal IQ scores are derived from the Brief-IQ screener from the Leiter International Performance Scale [26].