1.5 Baseline vs. Intervention

To evaluate whether an intervention changed a participant’s behavior, we compare the behavior under different conditions. We usually measure the behavior in a baseline phase before we implement an intervention. This gives you a basis for judging how the intervention impacts the behavior. Baseline is usually what you’re already doing in response to the behavior.

Look at the behavior under different conditions:


What you’re currently doing; the treatment is NOT implemented


The treatment that you want to test

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