Kenneth L. Critchfield, PhD, is a tenured associate professor and program director of the Clinical Psychology Program of the Ferkauf Graduate School of Psychology at Yeshiva University. Dr. Critchfield's research, teaching, and clinical work all emphasize interpersonal and attachment-based principles of change implemented in Interpersonal Reconstructive Therapy. He was co-director of the IRT clinic at the University of Utah Neuropsychiatric Institute and was most recently directed the Combined-Integrated Clinical and School Psychology program at James Madison University. Dr. Critchfield is a Fellow of APA's Society for Advancement of Psychotherapy and he has held leadership roles with the Society for Exploration of Psychotherapy Integration, and has long been a member of the Society for Psychotherapy Research. He maintains a psychotherapy practice and frequently consults on issues of methodology, design, and analysis for work at the interface between interpersonal measurement, personality, and psychopathology. Lorna Smith Benjamin, PhD, is professor emerita of psychology at the University of Utah and founder of the Interpersonal Reconstructive Therapy Clinic at the University of Utah Neuropsychiatric Institute. She is the creator of Structural Analysis of Social Behavior for describing interactions with self and others, and of Interpersonal Reconstructive Therapy which was developed for "treatment resistant" psychiatric patients on the basis of what she learned after decades of using SASB in research and clinical practice.