Sandra Lema-Stern, Ph.D., is a Professor of Clinical Psychology and one of the original core faculty members at the Illinois School of Professional Psychology at Argosy University, Schaumburg. She received her both her Ph.D. and master's degree in Psychology (Experimental emphasis) from Northwestern University in Evanston, Illinois. Dr. Lema-Stern has extensive graduate teaching experience, having taught at the graduate level for twenty years. She currently focuses her teaching on cognitive-behavioral therapy, group therapy, and statistics and research design. She has conducted research in a broad range of areas including perceptual processes and vision research; teaching and learning styles and course design; group and organizational processes; domestic violence treatment and treatment evaluation. In addition to her academic activities, Dr. Lema-Stern has extensive clinical experience through private practice, providing therapy for individuals, couples, and groups. She is a recognized expert in the area of domestic violence, having developed, along with Dr. James Dugo, one of the first programs for male perpetrators to be in compliance with state protocol for treatment. With Dr. Dugo, she has developed a model that helps clinicians to conceptualize problems of anger and resistance and to engage clients who have these problems in the change process.