Why is the difficult to evaluate the effectiveness of psychotherapeutic treatments?
Correct answer: E. a,b and c
- A. Self-selection into therapy leads to biased samples
- B. Creating true control groups for comparison
- C. The number of possible treatment-disorder combinations to assess
- D. Most patients do not give consent to participate in research
- E. a,b and c
Explanation
Psychotherapy research is difficult because patients self-select into treatment, true untreated control groups can be difficult to create ethically, and many treatment-disorder combinations must be compared. Therefore, all three listed factors apply.
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