What aspect of the A-B-A design helps us determine whether the treatment, as opposed to some other variable, was responsible for any observed changes in behavior?

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The A-B-A design involves three phases: A (baseline), B (intervention), and A (return to baseline). By observing whether the target behavior returns to its original levels when the treatment is removed (second A phase), researchers can more confidently attribute changes in behavior to the treatment itself rather than to other variables. This return to baseline phase helps to demonstrate the treatment's effect on behavior.

What Aspect of the A-B-A Design Helps Us Determine Whether