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A researcher uses an ABAB design to test whether a relaxation technique reduces anxiety in a client. During the first treatment phase, the client's anxiety decreases. When the treatment is temporarily removed, anxiety increases again. The treatment is then reintroduced and anxiety decreases once more. What is the primary reason the researcher includes the final treatment phase rather than ending the study after the return-to-baseline phase?
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Research Methods in Psychology - 4th American Edition @ KPU
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A researcher uses an ABAB design to test whether a relaxation technique reduces anxiety in a client. During the first treatment phase, the client's anxiety decreases. When the treatment is temporarily removed, anxiety increases again. The treatment is then reintroduced and anxiety decreases once more. What is the primary reason the researcher includes the final treatment phase rather than ending the study after the return-to-baseline phase?