Dr. Pettigrew is conducting a study on a new psychotherapy for depression through the outpatient psychological services clinic at his university. The depressed patients in his study are all moderately depressed, and the therapists are clinical psychology interns and post-doctoral fellows who have received extensive training in the new technique. The clients, who are being paid to take part, are randomly assigned to either the treatment or control group. Overall, the study has been designed to maximize internal validity. What term is used for studies of this nature?
a. a psychotherapy efficacy study
b. a psychotherapy effectiveness study
c. a quasi-experimental treatment study
d. an analog treatment study
Question 2
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?
a. a psychotherapy efficacy study
b. a psychotherapy effectiveness study
c. an analog treatment study
d. a double-blind placebo trial
Results from sequential study of two cohorts tested at three ages and at three different points in t
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