The advantage of an ABAB design versus a simple AB phase-change design is that the ABAB design ____.
A) can be used when a treatment has a permanent or long-lasting effect
B) does not require a stable baseline phase
C) reduces the probability that the result is just chance or coincidence
D) can be used even if the treatment effect is temporary

Question

Quizplus · Accepted Answer

The ABAB design, also known as a reversal design, involves alternating between baseline (A) and intervention (B) phases. By repeating the intervention phase, it allows for the observation of whether changes in behavior (or other variables of interest) are reliably reproduced when the intervention is reintroduced. This repetition helps to reduce the likelihood that observed changes are due to chance or external variables, making it a more robust method for demonstrating the effectiveness of an intervention compared to a simple AB design, which only involves a single transition from baseline to intervention.

The Advantage of an ABAB Design Versus a Simple AB