This revised volume offers the latest in the theory, research, and practice of person-centered psychotherapies. This new edition presents an updated overview of person-centered therapies, with an emphasis on theory, history, primary change mechanisms, empirical support, and contemporary developments. The authors walk readers through the development and evolution of the approach, and show how to conceptualize person-centered therapy from a variety of perspectives, each of which offers different value to the client. Person-centered therapy, also called client-centered therapy, was created by Carl Rogers over 85 years ago, and this approach continues to evolve and influence the theory and practice of psychotherapy today. Rogers' emphasis on the importance of therapeutic relationship has been incorporated into the beliefs and values of almost all contemporary therapeutic systems. With updated research, implications for improving practice, and refinements in theory, this essential primer provides a rich, nuanced understanding of person-centered therapies and their continued impact on the field of psychotherapy.