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Louis Castonguay

Louis Castonguay

Professor of Psychology

354 Moore Building
Office Phone: (814) 863-1754


  1. Ph. D., SUNY Stony Brook, 1992


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.

Louis Castonguay's Vita

Louis Castonguay's Research Program

Pathways of integration

SPR Presidential address

Words of advice if you are planning to work in my lab as part of the Clinical Ph.D program at Penn State

Recent Edited Books

Practice-oriented research in psychotherapy: building partnerships between clinicians and research   Edited by Louis G. Castonguay and J. Christopher Muran

Visions in psychotherapy research and practice
Edited by Bernhard M. Strauss, Jacques P. Barber, and Louis G. Castonguay

Transformation in Psychotherapy: Corrective Experiences Across Cognitive Behavioral, Humanistic, and Psychodynamic Approaches
Edited by Louis G. Castonguay, PhD; Clara E. Hill, PhD

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

Psychopathology: From science to clinical practice
Edited by Louis G. Castonguay & Thomas Oltmanns


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., (2013). Psychotherapy outcome: A problem worth re-revisiting 50 years later.  Psychotherapy, 50, 52-67.

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., Barkham, M., Lutz, W., & McAleavey, A.A. (2013).  Practice-oriented research: Approaches and application.  In M.J. Lambert (Eds.).  Bergin and Garfield’s Handbook of psychotherapy and behavior change (sixth edition).  New York: Wiley.

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., 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., Eubanks, C., Goldfried, M.R., Muran, J.C., & Lutz, W. (2015).  Research in psychotherapy integration: Relevance of the past and necessity for the future. Psychotherapy Research, 25, 365-382.

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., & Hill, C.E. (in press).  Therapist effects: An introduction. To appear in L.G. Castonguay & C.E. Hill (Eds). Therapist effects: Toward understanding how and why some therapists are better than others.  To be published by 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. (2015).  Fostering collaboration between researchers and clinicians through building practice-oriented research: An introduction. Psychotherapy Research, 25, 1-5.

Castonguay, L.G., Nelson, D. L., Boswell, J.F., Nordberg, S., McAleavey, A.,Newman, M.G., & Borkovec, T.D. (2012). Corrective experiences in cognitive behavioral and interpersonal/emotional processing: A qualitative analysis. In L. G. Castonguay & C. E. Hill (Eds.). Transformation in psychotherapy: Corrective experiences across cognitive behavioral, humanistic, and psychodynamic approaches. Washington DC: American Psychological Association

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., 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., Pincus, A.L., & McAleavey, A.A. (2015). Practice-Research Network in a psychology training clinic: Building an infrastructure to foster early attachment to the scientific-practitioner model. Psychotherapy Research, 25, 52-66.

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.

Castonguay, L.G., Youn, S.J., Xiao, H., Muran, J.C., & Barber, J.P. (2015).  Building clinicians-researchers partnerships: Lessons from diverse natural settings and practice-oriented initiatives. Psychotherapy Research, 25, 166-184.

Kraus, D.R., Bentley, J.H., Alexander, P.C., Boswell, J.F., Constantino, M.J., Baxter, E.E., & Castonguay, L.G. (2016).  Predicting therapist effectiveness from their own practice-based evidence.  Journal of Consulting and Clinical Psychology, 84, 473-483.

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.

Koerner, K., & Castonguay, L.G. (2015). Practice-oriented research: What it takes to do collaborative research in private practice.  Psychotherapy Research, 25, 67-83.

LeMoulth, J., Castonguay, L.G., Joorman, J., & McAleavey, A. A. (2013).  Depression: Basic research and clinical implications. To appear in Psychopathology: Bridging the gap between basic empirical findings and clinical practice. New York: Guilford Press.

McAleavey, A.A., & Castonguay, L.G. (2014). Insight as a common and specific impact of psychotherapy: Therapist-reported exploratory, directive, and common factors interventions.  Psychotherapy, 51, 283-294.

McAleavey, A.A., Castonguay, L.G., & Xiao, H. (2014).  Therapist orientation, supervision match, and therapeutic interventions: Implication for session quality in a psychotherapy training practice research network. Counseling and Psychotherapy Research, 14, 192-200.

McAleavey, A.A., Lockard, A.J., Castonguay, L.G., Hayes, J.A., & Locke, B.D. (2015).  Building a practice research network: Obstacles faced and lessons learned at the center for collegiate mental health.  Psychotherapy Research, 25,134-151.

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.

Newman, M.G., Castonguay, L.G., & Jacobson, N.C. (2015).  Attachment as a moderator of treatment outcome for GAD: Comparison between CBT plus supportive listening and CBT plus emotional processing therapy, Journal of Consulting and Clinical Psychology, 83, 915-925.

Nordberg, S.S., Castonguay, L.G., Fisher, A.J., Boswell, J.F., & Kraus, D. (2014). Validating the rapid responder construct within a practice research network. Journal of Clinical Psychology, 70, 886-903.

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.

Youn, S.J, Kraus, D.R., & Castonguay, L.G. (2012).Treatment outcome package: Facilitating practice and clinically relevant research.  Psychotherapy: Theory, Research, Practice, and Training. 49, 115-122.

Zack, S.E., Castonguay, L.G., Boswell, J.F., McAleavey, A.A., Adelman, R., Kraus, D. , & Pate, G.A. (2015).  Attachment history as a moderator of the alliance outcome relationship in adolescents. Psychotherapy, 52, 258-267.


Research Interests:

Clinical (Adult and Child):
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