Dr.Hennepin is conducting a study on a new psychotherapy for depression.The depressed clients in his study are diverse,ranging greatly both in the presence of comorbid diagnoses and the severity of their depression; the therapists also are diverse,with different types of mental health training (clinical psychology,social work)and different levels of experience.Dr.Hennepin's study has a high degree of external validity.What term is used for studies of this nature?

Question

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A psychotherapy effectiveness study refers to a study that is conducted under real-world conditions with diverse participants and therapists, and thus has a high degree of external validity. In such studies, the aim is to examine the effectiveness of a treatment in real-world settings and not just under idealized conditions, as is the case in efficacy studies (option A), analog treatment studies (option C), or double-blind placebo trials (option D).

DrHennepin Is Conducting a Study on a New Psychotherapy for Depression.The