A researcher has developed a device to prevent snoring. The device works immediately when it is put on, but has no lasting effect when it is removed. The researcher decides to evaluate this device with a single-case design. Which design is most appropriate?
A) ABAB design
B) Multiple-baseline design
C) Alternating treatments design
D) Changing criterion design

Question

Quizplus · Accepted Answer

The ABAB design, also known as a reversal design, is most appropriate for evaluating the immediate effects of an intervention that does not have lasting effects once removed. This design involves an initial baseline phase (A), followed by an intervention phase (B), a return to baseline (A), and a second implementation of the intervention (B). This allows the researcher to observe the effects of the device on snoring both when it is used and when it is not, demonstrating the direct effects of the intervention.

A Researcher Has Developed a Device to Prevent Snoring