This book is an exploration and mapping of the frontiers of research in psychotherapy. The authors make a systematic effort to discover where the science is going; analyzing conceptual problems, trends, and issues; record their interviews with the leaders in the field; and, recommend new directions for research. The volume is the result of a three-year study on collaborative research in psychotherapy by the National Institute of Mental Health, and was first published in 1972. In "Changing Frontiers in the Science of Psychotherapy", Allen E. Bergin and Hans H. Strupp introduce the reader to therapeutic science as it appeared to them during a three year process of evaluating available literature, conducting interviews with scientists and therapists, and exchanging and formulating viewpoints. Personal reflections and experiences were gleaned from working papers, correspondence, and personal material, all of which gave life to the ongoing processes of science and provide considerable insight into everyday reality behind the scenes. The prominent therapists interviewed in this book include Arnold A. Lazarus, Lester Luborsky, Arthur H. Auerbach, Lyle D. Schmidt, Stanley R. Strong, Paul E. Meehl, Howard F. Hunt, Bernard F. Riess, Thomas S. Szasz, Arnold P. Goldstein, Gerald C. Davison, Bernard Weitzman, J. B. Chassan, Kenneth M. Colby, Albert Bandura, Robert S. Wallerstein, Harold Sampson, Louis Breger, Howard Levene, Ralph R. Greenson, Milton Wexler, Carl B. Rogers, Charles B. Traux, Joseph D. Matarazzo, Neal E. Miller, Henry B. Linford, Peter H. Knapp, John M. Shlien, David Bakan, Marvin A. Smith, and Peter J. Lang, all of whom remain leading figures in the literature on psychotherapy.