A team of researchers at a university completed a controlled study examining how well a particular psychotherapy approach works with a specific disorder. Therapists in the study used a manual directing their actions in conducting therapy. The researcher's study is BEST described as an _____ study.

Question

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Efficacy studies are controlled studies designed to test whether a therapy works under ideal conditions, often using manuals to guide therapists' actions.

A Team of Researchers at a University Completed a Controlled