Standard Article

Psychotherapy Research

  1. Louis G. Castonguay,
  2. Samuel S. Norberg,
  3. Alexander J. Schut,
  4. Michael J. Constantino

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0754

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Castonguay, L. G., Norberg, S. S., Schut, A. J. and Constantino, M. J. 2010. Psychotherapy Research. Corsini Encyclopedia of Psychology. 1–4.

Author Information

  1. Pennsylvania State University

Publication History

  1. Published Online: 30 JAN 2010


Psychotherapy research is primarily concerned with the evaluation of the impact and process of psychological interventions for clinical disorders (e.g., depression, anxiety), problems of living (e.g., marital discord), and medical conditions (e.g., chronic pain). It is also concerned with characteristics of the client and therapist as they relate to treatment process and outcome. Most psychotherapy research has focused on individual treatment. However, numerous investigations have also been conducted on couples, family, and group therapy.


  • psychotherapy;
  • process of change;
  • treatment outcome