LIST OF CONTRIBUTORS

W Stewart Agras, MD, is a professor emeritus of psychiatry at the Stanford University School of Medicine, Stanford, California, USA. His research is focused on the efficacy, effectiveness, and mechanisms of evidence-based psychotherapies for the treatment of eating disorders in both adolescents and adults and in the implementation of variants of evidence-based treatments in community settings.

Gerhard Andersson, PhD, is a professor of clinical psychology at Linköping University, Sweden. His research focuses on internet interventions for a range of psychiatric and somatic disorders and conditions. He is also active as a clinician and researcher in the field of audiology/hearing disorders.

Paul W Andrews, PhD, is an associate professor in the Department of Psychology, Neuroscience, and Behaviour at McMaster University, Hamilton, Ontario, Canada. His research on depression as an evolved adaptation to promote rumination has been published in prominent psychology and neuroscience journals and received widespread media attention, including The New York Times.

Joanna J Arch, PhD, is an associate professor of psychology and neuroscience at the University of Colorado Boulder, USA. Her research focuses on developing and evaluating interventions designed to address anxiety disorders as well as to improve well-being among anxious adults with cancer, with a focus on mindfulness and acceptance-based interventions.

Scott A Baldwin, PhD, is a professor of psychology at Brigham Young University, Provo, Utah, USA. His research focuses on methodological and statistical issues in psychotherapy research and related fields. His primary substantive interest is in therapist effects and improving psychotherapy outcomes.

Jacques P Barber, PhD, is a professor and dean of the Derner School of Psychology at Adelphi University, New York, USA, and a professor at the University of Pennsylvania and adjunct professor of psychiatry at NYU Medical School. His research focuses on the efficacy and processes of change of dynamic and cognitive psychotherapies for various disorders.

Michael Barkham, PhD, is a professor of clinical psychology at the University of Sheffield, England. He is a member of the PEARLS Research Lab, and his research focuses on conducting pragmatic trials and analyzing very large practice-based datasets to enhance treatment effectiveness and understand patient and therapist variability.

Thomas Berger, PhD, is a professor of clinical psychology and psychotherapy at the University of Bern, Switzerland. His research focuses on internet-based interventions, psychotherapy process and outcome research, training of therapists, psychotherapy integration, and transdiagnostic vulnerability factors.

James F Boswell, PhD, is an associate professor of clinical psychology at the University at Albany, SUNY, New York, USA, where he directs the Practice Oriented Research Lab. His research focuses on psychotherapy process and outcome, practice-research integration, and measurement-based care.

Jonathan B Bricker, PhD, is a professor of public health at the Fred Hutchinson Cancer Research Center and affiliate professor of psychology at the University of Washington, Seattle, USA. He leads the NIH-funded Health and Behavioral Innovations in Technology (HABIT) research lab, which focuses on developing, testing, and disseminating theory-based behavioral interventions for health behavior change.

Gary M Burlingame, PhD, is Warren & Wilson Dusenberry professor and chair of psychology at Brigham Young University, Provo, Utah, USA. He is the incoming president of the American Group Psychotherapy Association and past president of APA Society of Group Psychology and Psychotherapy. His research focuses on measurement and small group treatments.

Louis G Castonguay, PhD, is a liberal arts professor of psychology at Penn State University, University Park, Pennsylvania, USA. His research focuses on the process and outcome of psychotherapy, as well as on practice-research networks and practice-based evidence.

Zachary D Cohen, PhD, is a clinical psychology researcher at University of California-Los Angeles, USA, and is currently leading an effort within UCLA's Depression Grand Challenge to develop and disseminate personalized digital therapies for depression, anxiety, trauma, and sleep problems. His work focuses on developing data-driven approaches to treatment selection and personalization.

Mary Beth Connolly Gibbons, PhD, is an associate professor of psychiatry at the Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA, where she is director of the Center for Psychotherapy Research. Her studies evaluate the comparative effectiveness of treatments for depression and the effectiveness of a therapist feedback system in community settings.

Michael J Constantino, PhD, is a professor of clinical psychology at the University of Massachusetts-Amherst, USA, where he directs the Psychotherapy Research Lab. His research centers on patient, therapist, and dyadic factors in psychosocial treatments; pantheoretical principles of clinical change (common factors); therapist effects and responsivity; and measurement-based care.

Alice E Coyne, MS, is a graduate student at the University of Massachusetts-Amherst, USA, where she is a member of the Psychotherapy Research Lab. Her research aims to identify, and to develop ways to capitalize on, patient, dyadic, and therapist characteristics and processes that can enhance the efficacy of psychotherapy.

Paul Crits-Christoph, PhD, is a professor of psychiatry at the Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA. His recent research has focused on the process of psychotherapies for diverse disorders and patient preferences for different treatments.

Kim de Jong, PhD, is an assistant professor of clinical psychology at Leiden University, South Holland, the Netherlands, and chair of the International Network Supporting Psychotherapy Innovation and Research into Effectiveness (INSPIRE). Her research combines basic science and practice-based methods to improve outcomes for patients and therapists in routine mental health care.

Jaime Delgadillo, PhD, is a senior lecturer in clinical psychology and a member of the PEARLS Research Lab in the Psychology Department at the University of Sheffield, England. His research focuses on outcome monitoring, prediction, and feedback in routine mental health care.

Robert J DeRubeis, PhD, is a professor of psychology and director of clinical training at the University of Pennsylvania, Philadelphia, USA. He has conducted comparative clinical trials of treatments for major depression and has made empirical and methodological contributions to the prediction and understanding of the processes of therapeutic change and the maintenance of gains made in therapy.

Gary M Diamond, PhD, professor, Department of Psychology, Ben-Gurion University of the Negev, Beersheba, Israel, has developed and tested family-based treatments for depressed and suicidal adolescents, and for sexual and gender minority young adults and their non-accepting parents. His research focuses on change mechanisms, such as the therapeutic alliance, emotional processing, and parental acceptance.

Robert Elliott, PhD, is a professor of counseling at the University of Strathclyde, Glasgow, Scotland. A psychotherapy research methodologist, his research focuses on outcomes and change processes in emotion-focused and other humanistic experiential psychotherapies. He is a fellow in the Divisions of Psychotherapy and Humanistic Psychology of the American Psychological Association.

Catherine F Eubanks, PhD, is an associate professor of clinical psychology at the Ferkauf Graduate School of Psychology of Yeshiva University, New York City, New York, USA, and associate director of the Mount Sinai-Beth Israel Brief Psychotherapy Research Program. Her research focuses on alliance ruptures, alliance-focused training, and therapist skills across theoretical orientations.

Evan M Forman, PhD, is the director of the Center for Weight Eating and Lifestyle Science and professor of psychology at Drexel University, Philadelphia, Pennsylvania, USA. He conducts NIH-supported research developing innovative technological and behavioral approaches to health behavior change, and is the author of Effective Weight Loss: An Acceptance-Based Behavioral Approach.

Myrna L Friedlander, PhD, professor, Department of Educational and Counseling Psychology at the University at Albany/SUNY, USA, teaches doctoral seminars on psychotherapy processes and outcomes. Her research focuses on therapeutic change processes, particularly the working alliance, within individual psychodynamic, couple and family therapies, and relational processes in psychotherapy supervision.

Brandon A Gaudiano, PhD, is a professor of psychiatry and public health at Brown University, Providence, Rhode Island, USA. He is primary faculty at the Brown Mindfulness Center, and his work centers on developing and testing transitions of care and acceptance- and mindfulness-based interventions for individuals with severe mental illness.

Simon B Goldberg, PhD, is an assistant professor of counseling psychology at the University of Wisconsin-Madison, USA. His research focuses on psychological interventions to promote well-being. His primary interests include meditation-based interventions and improving psychotherapy outcomes through augmenting transtheoretical factors.

David A F Haaga, PhD, is a professor of psychology at American University, Washington, DC, USA, where he teaches a cognitive behavior therapy practicum for doctoral...