Dr. Clark observes his client's sleep difficulties for a period of 2 weeks to establish a baseline. He then institutes an intervention and measures the client's sleep difficulties for 2 weeks. The intervention is removed for a period of 2 weeks and then implemented again, and measurements are taken. This design is best described as ______.

Question

Quizplus · Accepted Answer

This design is best described as an A-B-A-B design, as there are two phases of intervention (B) separated by a period of baseline measurement (A). The fact that the intervention is removed and then implemented again strengthens the design by providing additional evidence for the effectiveness of the intervention.

Dr Clark Observes His Client's Sleep Difficulties for a Period