Table 3 Example of Treatment Fidelity

Step	Intervention Procedure	0	Notes
1	“OO, the teacher will read a story.”
	If the participant’s attention drifts while reading the story, provide verbal and physical prompts.“OO, let’s listen to the story.”
2	After the story is finished, present the target page (starting from the last page of the story). “OO, let’s talk about the title of the story. Present the target page and ask a question related to that page.
	2-1. If a correct response (including partial responses) occurs within 5 s, provide strong social reinforcement within 30 s.
	2-2. If an incorrect response or no response occurs within 5 s, present the page again and provide verbal prompts so that the participant can echo the correct response after modeling.
	2-2-1. If a correct response occurs within 5 s after prompting, provide strong social reinforcement within 30 s.
	2-2-2. If an incorrect response or no response occurs within 5 s again, present the page and provide verbal prompting to model and allow echoic responding.
	2-2-3. If an echoic response occurs within 5 s, provide strong social reinforcement within 30 s.
	2-2-4. If an incorrect response or no response occurs within 5 s again, model the correct response but do not require a response from the participant, and terminate the trial.
3	If the participant shows problem behavior for more than 1 minute during the session, terminate the session.