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Research Interests

Louis Castonguay's primary research interest concerns the process and outcome of different forms of psychotherapy. He studies the nature and impact of the therapist's interventions, client's experience, and therapeutic relationship. He has also been involved in the development and investigation of integrative therapies (combining cognitive-behavioral, humanistic, interpersonal, and psychodynamic procedures) for depression and generalized anxiety disorder. He is also involved in the development of Practice Research Networks, which are designed to foster researchers and clinicians collaboration in conducting naturalistic studies in psychotherapy and related fields of research.

Recent Edited Books

Principles of Therapeutic Change that Work
Edited by Louis G. Castonguay and Larry E. Beutler

Insight in Psychotherapy
Edited by Louis G. Castonguay, PhD; Clara E. Hill, PhD

Bringing Psychotherapy Research to Life: Understanding Change Through the Work of Leading Clinical Researchers
Edited by Louis G. Castonguay, PhD; J. Christopher Muran, PhD; Lynne Angus, PhD; Jeffrey A. Hayes, PhD; Nicholas Ladany, PhD; and Timothy Anderson, PhD

Recent Publications

Boswell, J.F., Castonguay, L.G., & Wasserman, R. H.  (2010). Effects of Psychotherapy Training and Intervention Use on Session Outcome. Journal of Consulting and Clinical Psychology, 78, 717-723.

Castonguay, L.G. (2011). Psychotherapy, psychopathology, research and practice: Pathways of connections and integration.  Psychotherapy research, 21, 125-140..

Castonguay, L.G., (2006).  Personal Pathways in Psychotherapy Integration. Journal of Psychotherapy Integration, 16, 36-58.

Castonguay, L.G. (2000).  A common factors approach to psychotherapy training. Journal of Psychotherapy Integration, 10, 263-282.

Castonguay, L.G., & Beutler, L. E. (Eds) (2005). Principles of therapeutic change that work.  New York: Oxford University Press.

Castonguay, L.G., Boswell, J.F., ,Constantino, M.J., Goldfried, M.R., & Hill, C.E. (2010). Training Implications of Harmful Effects of Psychological Treatments. American Psychologist, 65, 34-49.

Castonguay, L.G., Boswell, J.F., Zack, S., Baker, S., Boutselis, M., Chiswick, N., Damer, D., Hemmelstein, N., Jackson, J., Morford, M.,  Ragusea, S.,  Roper, G., Spayd, C., Weiszer, T., Borkovec, T.D., & Grosse Holtforth,, M. (2010). Helpful and hindering events in psychotherapy: A practice research network study. Psychotherapy: Theory, Research, Practice, and Training, 47, 327-344.

Castonguay, L.G., & Hill, C. E (Eds). (2006). Insight in Psychotherapy. American Psychological Association Press.

Castonguay, L.G., Locke, B.D., & Hayes, J.A. (2011). The Center for Collegiate Mental Health: An Example of a Practice-Research Network in University Counseling Centers, Journal of College Student Psychotherapy, 25, 105-119.

Castonguay, L.G., Muran, J.C., Angus, L., Hayes, J.H., Ladany, N., & Anderson, T. (Eds) (2010)  Bringing psychotherapy research to life: Understanding change through the work of leading clinical researchers.  American Psychological Association Press.

Castonguay, L., Nelson, D., Boutselis, M,.  Chiswick, N., Damer, D., Hemmelstein,  N.,  Jackson, J., Morford, M., Ragusea, R,  Roper, G.,  Spayd, C.,  Weiszer, T. & Borkovec, T., (2010). Clinicians and/or Researchers?  A Qualitative Analysis of Therapists’ Experiences in a Practice Research Network. Psychotherapy: Theory, Research, Practice, and Training, 47, 345-354.

Castonguay, L.G., Constantino, M.J., & Grosse Holtforth, M. (2006). The working alliance: Where are we and where should we go? Psychotherapy: Theory, Research, Practice, and Training, 43, 271-279.

Castonguay, L.G., Constantino, M.J., McAleavey, A.A., & Goldfried, M.R. (2010). The Alliance in Cognitive-Behavioral Therapy. In J. C. Muran & J. P. Barber, (Eds.), The Therapeutic Alliance: An Evidence-Based Approach to Practice and Training. New York: Guilford Press.

Castonguay, L.G., Goldfried, M.R., Wiser, S., Raue, P.J., and Hayes, A.H. (1996). Predicting outcome in cognitive therapy for depression: A comparison of unique and common factors. Journal of Consulting and Clinical Psychology, 64, 497-504.

Castonguay, L.G., Newman, M.G., Borkovec, T.D. Grosse Holtforth, M., &  Maramba, G.G. (2005).  Cognitive-behavior assimilative integration. In J.C. Norcross and M.R. Goldfried (Eds.): The handbook of psychotherapy integration, (2nd Edition). New York: Oxford University Press.

Castonguay, L.G., Pincus, A.L., Agras, W.S., and Hines, C.E. (1998). The role of emotion in group cognitive-behavioral therapy for binge eating disorder: when things have to feel worst before they get better. Psychotherapy Research, 8, 225-238.

Castonguay, L.G., Reid, J.J., Halperin, G.S., & Goldfried, M.R. (2003).  Psychotherapy integration.  In G.Stricker and T.A. Widiger (Eds.). Comprehensive handbook of Psychology, Vol. 8: Clinical Psychology. New York: Wiley.

Castonguay, L.G., Schut, A.J., Aikins, D., Constantino, M.J, Laurenceau, J.P., Bologh, L., & Burns, D.D. (2004).  Integrative cognitive therapy: A preliminary investigation. Journal of Psychotherapy Integration, 14, 4-20.

Kraus, D., & Castonguay, L.G., (2010). Treatment Outcome Package (TOP): Development and use in naturalistic settings. In M. Barkham,  G. E Hardy, & J Mellor-Clark (Eds), Developing and Delivering Practice-Based Evidence: A Guide for the Psychological Therapies..  New York: Wiley

Kraus, D.R., Castonguay, L.G., Boswell, J.F., Nordberg, S.S., & Hayes, J.A. (2011).  Therapist effectiveness: Implications for accountability and patient care. Psychotherapy Research, 21, 267-276.

Newman, M.G., Castonguay, L.G., Borkovec, T.D., Fisher, A.J., Boswell, J.F., Szkodny, L. & Nordberg, S. (2011).  A Randomized Controlled Trial of Cognitive-Behavioral Therapy for Generalized Anxiety Disorder with Integrated Techniques from Emotion-focused and Interpersonal Therapies.  Journal of Consulting and Clinical Psychology, 79, 171-181.

Newman, M.G., Castonguay, L.G., Borkovec, T.D., Fisher, A.J., & Nordberg, S. (2008).  An open trial of integrative therapy for generalized anxiety disorder. Psychotherapy: Theory, Research, Practice, and Training, 45, 135-147.

Parry, G., Castonguay, L.G., Borkovec, T.D., & Wolfe, A.W. (2010) Practice research networks and psychological services research in the UK and USA.  In M. Barkham,  G. E Hardy, & J Mellor-Clark (Eds), Developing and Delivering Practice-Based Evidence: A Guide for the Psychological Therapies.  New York: John Wiley

Schut, A.J., Castonguay, L.G., Bedics, J.D., Smith, T.L., Barber, J.P., Flanagan, K.M., & Yamasaki, A.S. (2005).  Therapist interpretation, patient-therapist interpersonal process, and outcome in psychodynamic psychotherapy for avoidant personality disorder.  Psychotherapy: Theory, Research, Practice, and Training. 42, 494-511.