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Mental Health

Student Profiles

Degree Program - Postdoctoral Fellows

Michelle CarrasMichelle Colder Carras

Year entered: 2015

Previous degrees:
PhD, Mental Health; 2015; Johns Hopkins Bloomberg School of Public Health
BA; 1987; Johns Hopkins University

Advisors: Tamar Mendelson, PhD and Peter Zandi, PhD

Research interests: Contextual influences associated with heavy use of technology and mental health, with an emphasis on the DSM-5 emerging measure of Internet gaming disorder.



  1. Griffiths, M. D., van Rooij, A. J., Kardefelt-Winther, D., Starcevic, V., Király, O., Pallesen, S., … Demetrovics, Z. (2016). Working towards an international consensus on criteria for assessing internet gaming disorder: a critical commentary on Petry et al. (2014). Addiction (Abingdon, England), 111(1), 167–175.
  2. Takayanagi, Y.; Spira, A.; Bienvenu, O.J.; Hock, R; Colder Carras, M.,  Eaton, W; Mojtabai, R.  (2014) Antidepressant Use and Lifetime History of Mental Disorders in a Community Sample: Results from the Baltimore Epidemiological Catchment Area Study.  J Clin Psychiatry. 2015 Jan;76(1):40-4.
  3. Carras, M. C., Mojtabai, R., Furr-Holden, C. D., Eaton, W., & Cullen, B. A. M. (2014). Use of mobile phones, computers and internet among clients of an inner-city community psychiatric clinic. Journal of Psychiatric Practice, 20(2), 94–103.
  4. Claassen, C. A., Pearson, J. L., Khodyakov, D., Satow, P. M., Gebbia, R., Berman, A. L., … Insel, T. R. (2014). Reducing the burden of suicide in the u.s.: the aspirational research goals of the national action alliance for suicide prevention research prioritization task force. American Journal of Preventive Medicine, 47(3), 309–314.
  5. Colder Carras, M. (2015). Re: Plenty of moustaches but not enough women: cross sectional study of medical leaders. The BMJ. Retrieved from
  6. Johnson, D., Jones, C., Scholes, L., & Colder Carras, M. (2013). Videogames and wellbeing:  A comprehensive review. Melbourne: Young and Well Cooperative Research Center.
  7. Jones, C., Scholes, L., Johnson, D., Katsikitis, M., & Carras, M. C. (2014). Gaming well: links between videogames and flourishing mental health. Developmental Psychology, 5, 260.
  8. Pennebaker, J. W., Colder, M., & Sharp, L. K. (1990). Accelerating the coping process. Journal of Personality and Social Psychology, 58(3), 528–537. (as Michelle Colder)

Hwanhee Hong

Year entered: 2014

Previous degrees:
BS, Statistics; 2008; Chung-Ang University, Seoul, South Korea
MS, Biostatistics; 2010; Harvard University
PhD, Biostatistics; 2013; University of Minnesota

Advisor: Elizabeth A. Stuart, PhD

Research interests: Propensity score, measurement error, causal inference, hierarchical Bayesian modeling, personalized medicine, comparative effectiveness research, patient-centered outcome, network meta-analysis, clinical trial data analysis, missing data.

Paul NestadtPaul Nestadt

Year entered: 2015

Previous degrees:
MD, Medical Doctorate; 2011; New York Medical College
BS, Neuroscience and Biology; 2003; Brandeis University

Advisor: Ramin Mojtabai, MD and William W. Eaton, PhD

Research interests: Anxiety disorders, suicide risk factors, and interface between psychiatrists and primary care physicians. My fellowship is focused on examining the characteristics of suicide completion that may be identified in the Maryland medical examiner’s suicide database, when cross referenced with the patients who visit the Johns Hopkins psychiatric emergency service.



  1. Nestadt, P.S., Speed, T.J., Keefe, F. J. and Dimsdale, J. E. 2016. “Stress and psychiatry”. In Kaplan and Sadock's comprehensive textbook of psychiatry, , 9th ed., Edited by: Sadock, B. J. and Sadock, V. A. [IN PRESS]. Philadelphia: Lippincott.
  2. Nestadt, P.S., Bienvenu, O.J., & Koenig, T.W. (2015). Psychiatry For The Internist. In The Johns Hopkins Internal Medicine Board Review (5th ed.). Philadelphia: Elsevier.[IN PRESS]
  3. Nestadt PS, Jamison KR. Mania. The Johns Hopkins Psychiatry Guide. Johns Hopkins POC-IT Center (Johns Hopkins Point of Care Information Technology Center), Baltimore, MD. November 2014.
  4. Friedman MB and Nestadt PS. "Depressed or Demoralized?" The Huffington Post., 18 Apr. 2013. Web.
  5. Peters ME, Nestadt P, Chisolm MS. Voices Coming From Facebook. Current Psychiatry. 2013 Feb:2(12):30.
  6. Haglund, M., Nestadt, P., Cooper, N.S., Southwick, S., & Charney, D.S. (2008). The Neurobiology of Resilience. In D. Charney & E. Nestler (Eds.), Neurobiology of Mental Illness, 3rd edition (pp.1387-1409). New York: Oxford University Press.
  7. Murrough JW, Mao X, Collins KA, Kelly C, Andrade G, Nestadt P, Levine SM, Mathew SJ, Shungu DC. Increased ventricular lactate in chronic fatigue syndrome measured by (1)H MRS imaging at 3.0 T. II: comparison with major depressive disorder. NMR Biomed. 2010 Jul;23(6):643-50.
  8. Haglund ME, aan het Rot M, Cooper NS, Nestadt PS, Muller D, Southwick SM, Charney DS. Resilience in the third year of medical school: a prospective study of the associations between stressful events occurring during clinical rotations and student well-being. Acad Med. 2009 Feb;84(2):258-68.
  9. Price RB, Shungu DC, Mao X, Nestadt P, Kelly C, Collins KA, Murrough JW, Charney DS, Mathew SJ. Amino acid neurotransmitters assessed by proton magnetic resonance spectroscopy: relationship to treatment resistance in major depressive disorder. Biol Psychiatry. 2009 May 1;65(9):792-800. Epub 2008 Dec 5.
  10. Haglund MA, Nestadt PS, Cooper NS, Southwick SM, Charney DS. Psychobiological Mechanisms of Resilience: Relevance to Prevention and Treatment of Stress-Related Psychopathology. Dev Psychopathol. 2007 Summer;19(3):889-920.

Bo Y ParkBo Y. Park

Year entered: 2015

Previous degrees:
PhD, Epidemiology; 2015; Drexel University
MPH, Clinical Evaluative Science; 2007; Dartmouth College
BA, Molecular Cell Biology; 2005; UC Berkeley

Advisor: M. Daniele Fallin, PhD and Heather Volk, PhD

Research interests: Modifiable prenatal exposures  and neurodevelopmental outcomes.



  1. Park BY, Lee BK. Use of Meconium in Perinatal Epidemiology: Potential Benefits and Pitfalls, Annals of Epidemiology(2014), doi:10.1016/j.annepidem.2014.09.009.
  2. Yao R, Ananth CV, Park BY, Pererira L, Plante LA. Obesity and the risk of stillbirth: a population-based cohort study. American Journal of Obstetrics and Gynecology. 2014; 210:
  3. Woskie, S. R., Kim, H., Freund, A., Stevenson, L., Park, B. Y., Baron, S., Herbert, R., de Hernández, M. S., Teitelbaum, S., de la Hoz, R. E., Wisnivesky, J. P. and Landrigan, P. (2011), World Trade Center Disaster: Assessment of Responder Occupations, Work Locations, and Job Tasks. American Journal of Industrial Medicine, 54: 681–695