The ABAB design involves:

Question

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The ABAB design, also known as a reversal design, involves an initial baseline phase (A) where behavior is observed without intervention, an intervention phase (B) where a treatment or manipulation is introduced, followed by a return to the baseline condition (A) to observe changes when the intervention is removed, and finally a second intervention phase (B) to see if the initial treatment effects can be replicated. Thus, it includes a second treatment or manipulation stage.

The ABAB Design Involves