Table 3 A Question of Social Validity

Area
Importance of Intervention Target	I think it is necessary for the target student to reduce avoidance in performing the task.
	I think the frequency of task avoidance of the target student has changed positively.
	I think the task of writing Korean language and the task of adding mathematics are necessary for the target student.
Appropriateness of Intervention Procedure	I think that differential reinforcement without extinction is appropriate for reducing children’s problematic behavior.
	I think the intervention without extinction is more positive than the intervention with extinction.
	I think that differential reinforcement without extinction is easier to use than other interventions.
Importance of the consequent	I think that differential reinforcement without extinction helped reduce task avoidance.
	I think that differential reinforcement without extinction helped the Korean writing and the math plus performance rate.
	I think the effect of differential reinforcement without extinction is maintained.