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Associate Professor with Tenure
Director, Anxiety Disorders Research
Director, Anxiety Disorders Treatment Clinic
Department of Psychiatry and Human Behavior
University of Mississippi Medical Center
Office: (601) 815-6518
Dr. Tull obtained his Ph.D. in Clinical Psychology from the University of Massachusetts Boston in August 2005, where he worked under the mentorship of Dr. Lizabeth Roemer conducting research on emotion regulation and the anxiety disorders. He also received training in acceptance- and mindfulness-based treatment approaches for the anxiety disorders. He completed his internship at the Boston Consortium in Clinical Psychology with rotations at the Outpatient Clinic, Substance Abuse Residential Treatment Program, and the National Center for Post-Traumatic Stress Disorder - Behavioral Sciences Division. In 2005, Dr. Tull joined the Center for Addictions, Personality, and Emotion Research at the University of Maryland (College Park) as Director of its Emotion Division. From 2006 to 2008, he served as a Research Assistant Professor in the Department of Psychology at the University of Maryland. In 2008, Dr. Tull joined the Department of Psychiatry and Human Behavior at the University of Mississippi Medical Center, where he currently holds the positions of Associate Professor (with Tenure) and Director of Anxiety Disorders Research. He also oversees the Anxiety Disorders Treatment Clinic. Dr. Tull is the 2009 recipient of the International Society for Traumatic Stress Studies Chaim and Bela Danieli Young Professional Award and the 2010 recipient of the Association for Behavioral and Cognitive Therapies President's New Researcher Award.
Dr. Tull specializes in the cognitive-behavioral treatment of patients with anxiety disorders, with particular expertise in the treatment of generalized anxiety disorder and PTSD. Dr. Tull also has training in mindfulness- and acceptance-based behavioral therapies for the anxiety disorders. He also has interests in the treatment of anxiety disorders that co-occur with physical health conditions, such as asthma or chronic pain. Dr. Tull directs the Anxiety Disorders Treatment Clinic within the Department of Psychiatry and Human Behavior at the University of Mississippi Medical Center.
Dr. Tull's research focuses on emotion regulation within the anxiety disorders, with a particular focus on PTSD. His research examines the ways in which: (a) emotion regulation strategies that function to avoid emotion (and internal experience in general) may serve as a vulnerability factor for the development and maintenance of posttraumatic symptoms; and (b) emotional approach and acceptance (such as through mindfulness) may serve as a protective factor for anxiety disorder-related pathology. This research stems from a growing body of theoretical and empirical literature that suggests a paradoxical effect of emotional avoidance/control and, conversely, the potential benefits of accepting and being mindful of one's internal experience. Currently, Dr. Tull is investigating specific behaviors associated with emotion dysregulation and avoidance (e.g., substance use, risky sexual behavior) and their association with negative clinical outcomes (e.g., residential substance abuse treatment drop-out, HIV infection) among substance users with PTSD. Dr. Tull utilizes a multi-method approach in his investigations, examining biological (e.g., cortisol, genetics), psychophysiological (e.g., heart rate variability), behavioral, and subjective indices of emotion dysregulation.
2500 North State Street
Jackson, MS 39216
General Information: 601-984-1000
Patient Appointments: 888-815-2005