Table 1 Research Participant Information

	Participant A	Participant B	Participant C
Chronological Age (Sex)	12 years 0 months (Male)	16 years 0 months (Male)	15 years 1 months (Male)
Date of Birth	2013.09.25	2009.10.05	2010.08.16
CARS Score	51	31	46.5
Language &Communication Characteristics	- Primarily produces unintelligible vocalizations.- Expresses refusal through crying when frustrated.	- Communicates using short words or phrases.- Capable of simple “Yes/No” responses.	- No expressive spoken language.- Uses single-syllable echoic utterances to make requests.- Expresses needs by reaching out with sound; expresses refusal by making sounds or attempting to leave the seat.
Behavioral Characteristics	- Exhibits problem behaviors when preferred activities are interrupted.- Displays aggressive gestures (e.g., staring at others while punching the air) when highly distressed.	- Shows strong fixation on specific objects or play, exhibiting ritualistic behaviors before the scheduled time.- Wanders around the classroom during lessons.	- Shows frustration by pinching others on the face or arms using index and middle fingers.