Dr. Timothy J. Trull, Ph.D., is a professor of psychological sciences at the University of Missouri. Tim got his Ph.D. from the University of Kentucky and completed his internship at New York Hospital Cornell Medical Center. His research interests are in the areas of diagnosis and classification of borderline personality disorder; mental disorders; clinical assessment; professional issues in clinical psychology; substance use disorders; and ambulatory assessment methods. Timothy has received several honors and awards for his mentoring and teaching, including the Robert S. Daniels Junior Faculty Teaching Award, Psi Chi Professor of the Year, and most recently the MU Graduate Faculty Mentor Award. He enjoys teaching Introduction to Clinical Psychology and Abnormal Psychology; his textbook, CLINICAL PSYCHOLOGY is used in classes across the world and in the U.S.