About Shirag Shemmassian

Shirag Shemmassian completed his Ph.D. in Clinical Psychology at UCLA.

Living with Tourette Syndrome, Shirag has focused his work experience and scholarship on the pathophysiology of childhood behavioral disorders, including ADHD, anxiety, and tic disorders. He currently develops tests used to help diagnose various mental health conditions.

In addition, Shirag is an expert on college, medical school, and graduate school admissions.


  • BS in Human Development, Cornell University
  • MA in Psychology, University of California, Los Angeles (UCLA)
  • PhD in Clinical Psychology, University of California, Los Angeles (UCLA)

Professional Fields

Work History

  • Founder, Shemmassian Academic Consulting
  • Project Director, Western Psychological Services (WPS)
  • Licensed Clinical Psychologist, Crossroads Institute for Psychotherapy and Assessment
  • Licensed Clinical Psychologist, Intricate Mind Institute

Milestones and Recognition

  • National Register Early Career Psychologist Credentialing Scholarship (2015)
  • Young Scientist Award, Armenian Engineers & Scientists of America (2015)
  • Psychology Predoctoral Internship Clinical Excellence Award, Children’s Hospital Los Angeles (2014)
  • Michael J. Goldstein Distinguished Dissertation Award Finalist, UCLA (2014)
  • Leadership Education in Neurodevelopmental Disabilities (LEND) Fellowship (2013-2014)
  • National Science Foundation (NSF) Graduate Research Fellowship (2010-2013)
  • Eugene V. Cota-Robles Fellowship, UCLA (2009-2010)
  • Kappa Omicron Nu Honor Society, Cornell University (2007)
  • Shemmassian, S. K., & Lee, S. S. (2015). Predictive utility of four methods of incorporating parent and teacher symptom ratings of ADHD for longitudinal outcomes. Journal of Clinical Child & Adolescent Psychology. doi: 10.1080/15374416.2014.971457
  • Shemmassian, S. K., & Lee, S. S. (2014). Comparative validity of DSM-IV and alternative empirically derived approaches for the assessment of ADHD. Journal of Attention Disorders. doi: 10.1177/1087054714522511
  • Zheng, Z., Shemmassian, S., Wijekoon, C., Kim, W., Bookheimer, S. Y., & Pouratian, N. (2014). DTI correlates of distinct cognitive impairments in Parkinson’s disease. Human Brain Mapping, 35(4), 1325-1333. doi: 10.1002/hbm.22256
  • Shemmassian, S. K., & Lee, S. S. (2012). Comparing four methods of integrating parent and teacher symptom ratings of attention-deficit/hyperactivity disorder (ADHD). Journal of Psychopathology and Behavioral Assessment, 34(1), 1-10. doi: 10.1007/s10862-011-9262-5
  • Piggot, J., Shirinyan, D., Shemmassian, S., Vazirian, S., & Alarcón, M. (2009). Neural systems approaches to the neurogenetics of autism spectrum disorder. Neuroscience, 164, 247-256. doi: 10.1016/j.neuroscience.2009.05.054

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