Professional Bio

Research Interests

Louis Castonguay ’s primary research interest concerns the process and outcome of different forms of psychotherapy. His studies focus on different aspects of the therapeutic change, including variables related to the clients, therapists, therapeutic relationship, and treatment interventions. Several of his studies have taken place in the context of Practice Research Networks, which are designed to foster researchers and clinicians collaboration in investigating psychotherapy as conducted in naturalistic settings.

Louis Castonguay's lab web page

Louis Castonguay's Vitae

Louis Castonguay's Research Program

Louis Castonguay's bio

Pathways of integration

SPR Presidential address

Recent Edited Books

Bergin and Garfield's handbook of psychotherapy and behavior change, 7th Edition
Edited by Michael Barkham, Wolfgang Lutz, and Louis G. Castonguay

Psychopathology: From science to clinical practice, 2nd Edition
Edited by Louis G. Castonguay, Thomas Oltmanns, and Abigail Powers Lott

Principles of change:  How psychotherapists implement research in practice Edited by Louis G. Castonguay, Michael Constantino, and Larry E. Beutler

Practice-oriented research in psychotherapy: building partnerships between clinicians and researchEdited 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 ResearchersEdited 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

How and why are some therapists better than others
Edited by Louis G. Castonguay, Ph. D. & Clara E. Hill, Ph. D. 

Selected Publication

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.

Carney, D., Castonguay, L.G., Janis, R.A., Scofield, B.E, Hayes, J.A., & Locke, B.D. (2021). Center effects: Counseling center variables as predictors of psychotherapy outcome.  The Counseling Psychologist, 49, 1013-1037.

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

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., Barkham, M., Youn, S.J., & Page, A.C. (2021).  Practice-based evidence: Findings from routine clinical settings. In M. Barkham, W. Lutz, & L.C., Castonguay (Eds.).  Bergin and Garfield’s handbook of psychotherapy and behavior change (7^th 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., Eubanks, C.F., Iwakabe, S., Kraus, M., Page, A.C., Zilcha-Mano, S., Lutz, W., & Barkham, M. (2021).  Epilogue: Prevalent themes, predictions, and recommendations. In M. Barkham, W. Lutz, & L.C., Castonguay (Eds.).  Bergin and Garfield’s handbook of psychotherapy and behavior change (7^th edition).  New York: Wiley.

Castonguay, L.G., Newman, M.G., & grosse Holtforth, M. (2019).  Cognitive-behavior assimilative integration.  In J.C. Norcross & M.R. Goldfried (Eds).  Handbook of psychotherapy integration (3^rd Edition). New York: Oxford University Press.

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., Constantino, M.J., & Xiao, H. (2019).  Integrating science and practice through researcher-clinician collaboration.  In J.C. Norcross & M.R. Goldfried (Eds) Handbook of psychotherapy integration (3^rd Edition). New York: Oxford University 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., Janis, R.A., Youn, S.J., Xiao, H., McAleavey, A.A., Boswell, J.F., Carney, D., Boutselis, M., Braver, M., Chiswick, N., Hemmelstein, N., Jackson, J., Lytle, R., Morford, M., Scott, H., Spayd, C., & O’Leary Wiley (2017).  Clinicians’ prediction and recall of therapeutic interventions: A practice research network study. Counseling Psychology Quaterly, 30, 308-322.

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., 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., Youn S. Y., Xiao, H., & McAleavey, A.A. (2018).  The therapeutic relationship: A warm, important, and potentially mutative factor in cognitive behavior therapy. In Tishby, O., & Wiseman, H. (Eds.) Developing the therapeutic relationship: Integrating case studies, research and practice.  Washington, DC: American Psychological Association.

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.

Kilcullen, J.R., Castonguay, L.G., Janis, R.A., Hallquist, M.N., Hayes, J.A., & Loke, B. D. (2021). Predicting future courses of psychotherapy within a grouped LASSO framework. Psychotherapy Research, 31, 63-77.

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., Battaglini, A., Rnic, K, & Castonguay, L.G. (2021).  Depression. In L.G. Castonguay, T.G. Oltmanns, & A Powers Lott (Eds), Psychopathology: From science to clinical practice (2^nd edition). New York: Guilford Press.

Lutz, W., Castonguay, L.G., & Barkham, M. (2021).  Traditions and new beginnings: Historical and current perspectives on research in psychotherapy and behavior change. In M. Barkham, W. Lutz, & L.C., Castonguay (Eds.).  Bergin and Garfield’s handbook of psychotherapy and behavior change (7^th edition).  New York: Wiley.

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., Hayes, J.A., Locke, B.D. (2020). Multilevel vs single level factor analysis. Differentiating within-person and between-person variability using the CCAPS-34. Journal of Consulting and Clinical Psychology, 88, 907-922.

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.

McAleavey, A.A., Youn, S.J., Xiao, H., Castonguay, L.G., Hayes, J.A., & Locke, B.D. (2019).  Effectiveness of routine psychotherapy: Methods matters. Psychotherapy Research, 29,139-156

Nelson, D.L., Castonguay, L.G. (2017).  The Systematic Use of Homework in Psychodynamic-Interpersonal Psychotherapy for Depression: An Assimilative Integration Approach. Journal of Psychotherapy Integration, 27, 265-281.

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., & 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.

Nordberg, S.S., Castonguay, L.G., McAleavey, A.A., Locke, B.D., & Hayes, J.A. (2016).  Enhancing feedback for clinical use: Creating and evaluating profiles of clients seeking counseling. Journal of Counseling Psychology, 63, 278-293.

Pottschmidt, N. R., Castonguay, L. G., Janis, R. A., Carney, D. M., Kilcullen, J. R., Davis, K. A., & Scofield, B. E. (in press) Client-therapist convergence on sleep difficulty and its impact on treatment outcomes. Psychotherapy Research

Xiao, H., Castonguay, L.G., Janis, R.B, Youn, S.J., Hayes, J.A., & Locke, B.D. (2017).  Therapist Effects on Dropout from a College Counseling Center Practice Research Network. Journal of Counseling Psychology, 64, 424-431.

Xiao, H., Hayes, J.A., Castonguay, L.G., McAleavey, A.A., & Locke, B.D. (2017).  Therapist effects and the impacts of therapy non-attendance. Psychotherapy, 54, 58-65.

Youn, S.J., Xiao, H., McAleavey, A., Scofield, B.E., Pedersen, T.R., Castonguay, L.G., Hayes, J.A., & Locke, B.D. (2019).  Assessing and investigating clinicians’ research interests: Lessons on expanding practices and data collection in a large practice research network.  Psychotherapy,56, 67-82.

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