1. Frans O, Rimmo PA, Aberg L, Fredrikson M. Trauma exposure and post-traumatic stress disorder in the general population. Acta Psychiatr Scand 2005;111(4):291-9.
2. Breslau N, Davis GC, Andreski P, Peterson E. Traumatic events and posttraumatic stress disorder in an urban population of young adults. Arch Gen Psychiatry 1991;48(3):216-22.
3. Fauerbach JA, Lawrence JW, Schmidt CW, Jr, et al. Personality predictors of injury-related posttraumatic stress disorder. J Nerv Ment Dis 2000;188(8):510-7.
4. Masten AS. Ordinary magic. Resilience processes in development. Am Psychol 2001;56(3):227-38.
5. Nemeroff CB, Bremner JD, Foa EB, et al. Posttraumatic stress disorder: a state-of-the-science review. J Psychiatr Res 2006;40(1):1-21.
6. Park CL, Adler NE. Coping style as a predictor of health and well-being across the first year of medical school. Health Psychol 2003;22(6):627-31.
7. Muris P, Schmidt H, Lambrichs R, Meesters C. Protective and vulnerability factors of depression in normal adolescents. Behav Res Ther 2001;39(5):555-65.
8. Khoshaba DM, Maddi SR. Early experiences in hardiness development. Consulting Psychology Journal: Practice and Research 1999;51(2):106-16.
9. Rutter M. Resilience: some conceptual considerations. J Adolesc Health 1993;14(8):626-31,690-6.
10. Morgan CA, 3rd, Wang S, Southwick SM, et al. Plasma neuropeptide-Y concentrations in humans exposed to military survival training. Biol Psychiatry 2000;47(10):902-9.
11. Heilig M, Koob GF, Ekman R, Britton KT. Corticotropin-releasing factor and neuropeptide Y: role in emotional integration. Trends Neurosci 1994;17(2):80-5.
12. Foa EB, Rothbaum BO. Treating the trauma of rape: cognitive behavioral therapy for PTSD. New York: Guilford Press; 1998.
13. Foa EB, Dancu CV, Hembree EA, et al. A comparison of exposure therapy, stress inoculation training, and their combination for reducing posttraumatic stress disorder in female assault victims. J Consult Clin Psychol 1999;67(2):194-200.
14. Brosse AL, Sheets ES, Lett HS, Blumenthal JA. Exercise and the treatment of clinical depression in adults: recent findings and future directions. Sports Med 2002;32(12):741-60.
15. Singh NA, Clements KM, Singh MA. The efficacy of exercise as a long-term antidepressant in elderly subjects: a randomized, controlled trial. J Gerontol A Biol Sci Med Sci 2001;56(8):M497-504.
16. Cotman CW, Berchtold NC. Exercise: a behavioral intervention to enhance brain health and plasticity. Trends Neurosci 2002;25(6):295-301.
17. Dishman RK, Berthoud HR, Booth FW, et al. Neurobiology of exercise. Obesity (Silver Spring) 2006;14(3):345-56.
18. Fredrickson BL. The role of positive emotions in positive psychology. The broaden-and-build theory of positive emotions. Am Psychol 2001;56(3):218-26.
19. Folkman S. Positive psychological states and coping with severe stress. Soc Sci Med 1997;45(8):1207-21.
20. Charney DS. Psychobiological mechanisms of resilience and vulnerability: implications for successful adaptation to extreme stress. Am J Psychiatry 2004;161(2):195-216.
21. Koenig HG, George LK, Peterson BL. Religiosity and remission of depression in medically ill older patients. Am J Psychiatry 1998;155(4):536-42.
22. Rachman S. The concept of required helpfulness. Behav Res Ther 1979;17(1):1-6.
23. Southwick SM, Vythilingham M, Charney DS. The psychobiology of depression and resilience to stress: implications for prevention and treatment. Annual Review of Clinical Psychology 2005;1:255-91.
24. Resick PA. Clinical psychology: a modular course. Philadelphia: Taylor & Francis Group; 2001.
25. Rhodes JE, Roffman J, Grossman JB. The rhetoric and reality of youth mentoring. In: Rhodes JE, ed. New directions in youth development: theory, practice, and research—a critical view of youth mentoring. San Francisco: Jossey-Bass; 2002: 9-20.
26. Frankl VE. Man’s search for meaning. Boston: Beacon Press; 1959:75-7.
27. Ochsner KN, Ray RD, Cooper JC, et al. For better or for worse: neural systems supporting the cognitive down- and up-regulation of negative emotion. Neuroimage 2004;23(2):483-99.
