Michael Barkham, PhD, is Professor of Clinical Psychology at the University of Sheffield, UK. He has over 35 years of experience researching the processes and outcomes of psychological therapies, focusing on the development of outcome measures, conducting pragmatic trials, and the analyses of large practice-based data sets.

Wolfgang Lutz, PhD, is Professor of Clinical Psychology and Psychotherapy at the University of Trier, Germany. His research focuses on change in psychotherapy and aims at supporting personalized decision-making based on empirical data. He is a former editor of Psychotherapy Research and president-elect of the Society for Psychotherapy Research.

Louis G. Castonguay, PhD, is Liberal Arts Professor of Psychology in the Department of Psychology at Penn State University, USA. His research focuses on factors related to the process and impact of psychotherapy. He is also involved in practice-oriented research and practice research networks. He has served as president of the Society for Psychotherapy Research.

List of Contributors vii Foreword xii Preface xiii Part I History and Methods 1 Chapter 1 Traditions and New Beginnings: Historical and Current Perspectives on Research in Psychotherapy and Behavior Change 3
Wolfgang Lutz, Louis G Castonguay, Michael J Lambert, and Michael Barkham Chapter 2 Methodological Foundations and Innovations in Quantitative Psychotherapy Research 19
Scott A Baldwin and Simon B Goldberg Chapter 3 The Conceptualization, Design, and Evaluation of Qualitative Methods in Research on Psychotherapy 51
Heidi M Levitt, John McLeod, and William B Stiles Part II Measuring and Evidencing Change in Efficacy and Practice- Based Research 87 Chapter 4 Measuring, Predicting, and Tracking Change in Psychotherapy 89Wolfgang Lutz, Kim de Jong, Julian A Rubel, and Jaime Delgadillo Chapter 5 The Efficacy and Effectiveness of Psychological Therapies 135
Michael Barkham and Michael J Lambert Chapter 6 Practice- Based Evidence - Findings from Routine Clinical Settings 191Louis G Castonguay, Michael Barkham, Soo Jeong Youn, and Andrew C Page Part III Therapeutic Ingredients 223 Chapter 7 Patient, Therapist, and Relational Factors 225
Michael J Constantino, James F Boswell, and Alice E Coyne Chapter 8 Psychotherapy Process-Outcome Research: Advances in Understanding Causal Connections 263
Paul Crits-Christoph and Mary Beth Connolly Gibbons Chapter 9 Therapist Effects: History, Methods, Magnitude, and Characteristics of Effective Therapists 297
Bruce E Wampold and Jesse Owen Chapter 10 Training and Supervision in Psychotherapy: What We Know and Where We Need to Go 327
Sarah Knox and Clara E Hill Chapter 11 Qualitative Research: Contributions to Psychotherapy Practice, Theory, and Policy 351
John McLeod, William B Stiles, and Heidi M Levitt Part IV Therapeutic Approaches and Formats 385 Chapter 12 Research on Dynamic Therapies 387
Jacques P Barber, J Christopher Muran, Kevin S McCarthy, John R Keefe, and Sigal Zilcha-Mano Chapter 13 Research on Humanistic- Experiential Psychotherapies: Updated Review 421
Robert Elliott, Jeanne Watson, Ladislav Timulak, and Jason Sharbanee Chapter 14 Cognitive, Behavioral, and Cognitive Behavioral Therapy 469
Michelle G Newman, W Stewart Agras, David A F Haaga, and Robin B Jarrett Chapter 15 Mindfulness and Acceptance-Based Treatments 507
Evan M Forman, Joanna J Arch, Jonathan B Bricker, Brandon A Gaudiano, Adrienne S Juarascio, Shireen L Rizvi, Zindel V Segal, and Kevin E Vowles Chapter 16 Systemic and Conjoint Couple and Family Therapies: Recent Advances and Future Promise 539
Myrna L Friedlander, Laurie Heatherington, and Gary M Diamond Chapter 17 Efficacy of Small Group Treatments: Foundation for Evidence- Based Practice 583
Gary M Burlingame and Bernhard Strauss Chapter 18 Psychotherapy for Children and Adolescents: From Efficacy to Effectiveness, Scaling, and Personalizing 625
Mei Yi Ng, Jessica L Schleider, Rachel L Horn, and John R Weisz Part V Increasing Precision and Scale in the Psychological Therapies 671 Chapter 19 Personalized Treatment Approaches 673
Zachary D Cohen, Jaime Delgadillo, and Robert J DeRubeis Chapter 20 Combining Psychotherapy and Medications: It's All About the Squids and the Sea Bass (at Least for Nonpsychotic Patients) 705
Steven D Hollon, Paul W Andrews, Matthew C Keller, Daisy R Singla, Marta M Maslej, and Benoit H Mulsant Chapter 21 Internet Approaches to Psychotherapy: Empirical Findings and Future Directions 739
Gerhard Andersson and Thomas Berger Chapter 22 Extending the Scalability and Reach of Psychosocial Interventions 763
Alan E Kazdin Part VI Towards the Future 791 Chapter 23 Epilogue: Prevalent Themes, Predictions, and Recommendations 793Louis G Castonguay, Catherine F Eubanks, Shigeru Iwakabe, Mariane Krause, Andrew C Page, Sigal Zilcha- Mano, Wolfgang Lutz, and Michael Barkham Appendix Table of Contents for All Chapters and Editions over the Last 50 Years 803 Author Index 809 Subject Index 823