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1. Reliable Change Index

2. Implications of therapist effects for the design and analysis of comparative studies of psychotherapies

3. Estimating variability in outcomes attributable to therapists: A naturalistic study of outcomes in managed care

4. The incremental validity of the MMPI–2: When does therapist access not enhance treatment outcome?

5. Is guided self-help as effective as face-to-face psychotherapy for depression and anxiety disorders? A systematic review and meta-analysis of comparative outcome studies

6. Comparative Studies of Psychotherapies: Is It True That "Everyone Has Won and All Must Have Prizes"?

7. Developing improved observational methods for evaluating therapeutic effectiveness

8. Wikipedia Bibliography:

   1. Multilevel model

   2. Variance

   3. https://en.wikipedia.org/wiki/PHQ-9  :

      https://en.wikipedia.org/wiki/PHQ-9

   4. Dodo bird verdict

   5. Cognitive behavioral therapy

   6. Reliability (statistics)

   7. Observational error

   8. Confidence interval

   9. https://en.wikipedia.org/wiki/Caterpillar_plot  :

      https://en.wikipedia.org/wiki/Caterpillar_plot

   10. Statistical-significance