Sumner Sydeman, PhD

Sumner Sydeman Professor
Northern Arizona University
Blg 60 Rm #365
Phone: 928-523-9472

Post-Doctoral Fellowship, 1998-2000, Department of Clinical and Health Psychology, University of Florida
Clinical Psychology Pre-doctoral Internship, 1997-1998, Department of Clinical and Health Psychology, University of Florida
Ph.D. Clinical Psychology, 1998, University of South Florida
M.A. Psychology, 1995, University of South Florida
B.A. Psychology, 1991, University of Virginia
E-mail: sumner dot sydeman at

Professional interests

Dr. Sydeman is a clinical psychologist with a specialty in health psychology. His areas of research are in the areas of emotional factors associated with coronary heart disease, anxiety and anxiety disorders, and depression. He also studies electronic cigarettes and novel substances of abuse. Other areas of interest include psychological assessment in health psychology and bariatric surgery for severely obese individuals.

Recent publications  

  • Larson, N.C., Barger, S.D., & Sydeman, S.J. (2013). Type D personality is not associated with coronary heart disease risk in a North American sample of retirement-aged adults. International Journal of Behavioral Medicine, 20, 277-285. 
  • Steil, M.A., Lorenzo, L., & Sydeman, S.J. (2010). Demographic variables are associated with knowledge, attitudes, and preventive behaviors related to environmental tobacco smoke. Nicotine and Tobacco Research, 12(6), 674-678. 
  • Sydeman, S.J. (2008). Self-report inventories. In G.L. Fisher & N.A. Roget (Eds.), Encyclopedia of Substance Abuse Prevention, Treatment, and Recovery (pp. 816-820). Thousand Oaks, CA: Sage Publications, Inc. 
  • Donoho, C.J., Stalls, D.W., & Sydeman, S.J. (2008). Depression in phase II, III, and IV patients with coronary heart disease. Journal of the Arizona-Nevada Academy of Science, 40, 86-90. 
  • Garnaat, S.L., Gwinn, J.E., Riley, S.L., Winslow, L.A., Hansbourgh, M.C., Zielinski, A.L., Gorter, E.L., Blevins, J., Sydeman, S.J. (2008). Relationship between trait anxiety and health-related factors. Modern Psychological Studies, 8, (3-9). 


Dr. Sydeman teaches Abnormal Psychology (PSY 215) and Introduction to Clinical Psychology (PSY 406) at the undergraduate level, and Health Psychology Assessment (PSY 640) at the graduate level.