Table 4 Treatment Fidelity Checklist

Area	Target	Procedures	YES/NO
Multiple Stimulus without Replacement	Identifying the child’s preferred reinforcer	When the child chose the reinforcer, he/she was allowed to enjoy it for 30 seconds.
		The procedure of the non-switched multiple stimulus preference assessment was properly implemented.
Brief Functional Analysis	Tangible	The child’s request was not responded to and the desired object was precisely controlled so that he/she did not get what he/she wanted.
		When the child engaged in a problem behavior, the preferred object was immediately provided according to the condition.
	Escape	When the child performed the task, neutral feedback that was not excessive was properly provided.
		When the child engaged in a problem behavior, the task was immediately withdrawn and a 20-second break was given.
	Play	The child was approached and interacted with at least once every 20 seconds.
		When the problem behavior occurred, no additional feedback or approach was provided for 10 seconds.
Baseline and Maintenance	Accurate implementation of baseline and maintenance phases	When the child engaged in a problem behavior, the task was retrieved and a 30-second break was properly provided without any feedback other than the feedback, “Okay, don’t do that.”
		When the child properly complied with the task and showed a correct response, appropriate feedback was provided without physical interaction.
		When the child did not respond or showed an incorrect response to the task, appropriate physical prompting was used to ensure that the task was completed, and appropriate feedback was provided without physical interaction.
Intervention	Accurate implementation of differential reinforcement without extinction	When the child showed a problem behavior, the task was retrieved and a 30-second rest was provided without any feedback other than the feedback “Okay, don’t do that.”
		When the child complied with the task and showed a correct response, the 1st to 4th ranked reinforcers and rest periods were provided correctly in the order of preference evaluation.
		When the child did not respond or showed an incorrect response to the task, appropriate physical prompting was used to ensure that the task was completed, and the 5th to 7th ranked reinforcers and rest periods were provided correctly in the order of preference evaluation.