To evaluate the efficacy of a new intervention procedure, a clinician observes a patient's behavior before and after the intervention. The clinician then repeats the procedure, again observing the patient's behavior before and after the introduction of the treatment. Which single-case experimental design best describes the clinician's investigation?
A) A-B-A-B design
B) A-B-BC-B design
C) A-B-C-A design
D) A-B-AB-A design

Question

Quizplus · Accepted Answer

This design involves a baseline phase (A), followed by the introduction of the intervention (B), followed by a removal of the intervention (A), and then a reintroduction of the intervention (B). This allows for the comparison of the behavior during the intervention phase to both the baseline phase and the previous intervention phase, providing a stronger assessment of the efficacy of the intervention.

To Evaluate the Efficacy of a New Intervention Procedure, a Clinician