Imagine that a researcher tests a new form of psychotherapy for depression by randomly assigning depressed people to two groups: one that receives the psychotherapy and one that receives no treatment. Imagine further after a month the treatment group is significantly less depressed than the control group. Explain why this does not constitute good evidence that the new psychotherapy works.

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The Answer of Imagine that a researcher tests a new form of psychotherapy for depression by randomly assigning depressed people to two groups: one that receives the psychotherapy and one that receives no treatment. Imagine further after a month the treatment group is significantly less depressed than the control group. Explain why this does not constitute good evidence that the new psychotherapy works.

Imagine That a Researcher Tests a New Form of Psychotherapy