Gregory S. Chasson

  • Associate Professor of Psychology

Gregory S. Chasson is a licensed clinical psychologist and associate professor in the Department of Psychology at Illinois Institute of Technology. He received his Ph.D. in Clinical Psychology from the University of Houston and completed three years of pre- and post-doctoral training at Harvard Medical School (at McLean Hospital and Massachusetts General Hospital, respectively). From 2010 to 2016, Chasson was an assistant professor in the Department of Psychology at Towson University, where he directed the Site for OCD & Autism Research. He joined the Department of Psychology at Illinois Institute of Technology in fall 2016 as an associate professor and currently directs his clinical psychology research group called the Repetitive Experiences and Behavior Lab (REBL).



Ph.D., University of Houston, Clinical Psychology
M.A., University of Houston, Psychology
B.A., University of California-Santa Barbara, Psychology

Research Interests

Obsessive-compulsive spectrum disorders, particularly obsessive-compulsive disorder (OCD) and hoarding disorder, across the lifespan;Autism spectrum disorders, specifically high-functioning adult manifestations;Anxiety disorders and trauma-related conditions


* Denotes grad student at Illinois Tech

Obsessive-Compulsive and Related Conditions

Chasson, G. S., Guillot, C. R., Zvolensky, M. J., Liautaud, M. M., Schmidt, N. B., & Leventhal, A. M. (in press).  Obsessive-compulsive symptoms and cigarette smoking: An initial cross-sectional test of mechanisms of co-occurrence. Cognitive-Behaviour Therapy

Chasson, G. S., *Hamilton, C. E., *Luxon, A. M., *De Leonardis, A. J., *Bates, S., & *Jagannathan, N. (in press). Rendering promise: Enhancing motivation for change in hoarding disorder using virtual reality. Journal of Obsessive-Compulsive and Related Disorders

*Bates, S., *De Leonardis, A. J., Corrigan, P. W., & Chasson, G. S. (in press). Buried in stigma: Experimental investigation of the impact of hoarding depictions in reality television on public perception. Journal of Obsessive-Compulsive and Related Disorders.     

*Luxon, A. M., *Hamilton, C. E., *Bates, S., & Chasson, G. S. (2019). Pinning our possessions: Associations between digital hoarding and symptoms of hoarding disorder. Journal of Obsessive-Compulsive and Related Disorders, 21, 60-68.    

Chasson, G. S., *Guy, A. A., *Bates, S., & Corrigan, P. W. (2018). They aren’t like me, they are bad, and they are to blame: A theoretically-informed study of stigma of hoarding disorder and obsessive-compulsive disorder. Journal of Obsessive-Compulsive and Related Disorders, 16, 56-65.

Chasson, G. S., Bello, M. S., *Luxon, A. M., Graham, T. A. A., & Leventhal, A. M. (2017). Transdiagnostic emotional vulnerabilities linking obsessive-compulsive and depressive symptoms in a community-based sample of adolescents. Depression & Anxiety, 34, 761-769.

Chasson. G. S., Williams, M. T., Davis, D., & Combs, J. (2017). The utility of the Structured Clinical Interview for the DSM-IV Axis I Disorders (SCID-I) for the assessment of obsessive-compulsive disorder in African Americans. BMC Psychiatry [Open Access].

Autism Spectrum Disorder

Chasson, G. S., Eskow, K. G., Summers, J. A., & *Dreher, T. M. (in press). Characterization of family-directed care coordination and involvement in behavioral treatments in an autism-specific Medicaid waiver. Journal of Autism and Developmental Disorders. 

Eskow, K., Chasson, G. S., & Summers, J. A. (2019). The role of choice and control in the impact of autism waiver services on family quality of life and child progress. Journal of Autism and Developmental Disorders, 49, 2035-2048

Zhou, N., Wang, J., & Chasson, G. S. (2018). Psychiatric problems of Chinese college students with high autism traits. Research in Autism Spectrum Disorders, 54, 1-8.

Eskow, K. E., Chasson, G. S., Summers, J. A., & Mitchell, R. (2018). Association between parent-teacher partnership satisfaction and outcomes for children and families with autism. Journal of Policy and Practice in Intellectual Disabilities, 15, 16-25. 

Eskow, K., Chasson, G. S., & Summers, J. A. (2015). Child and family progress from a Medicaid Home and Community-Based Services autism waiver program. Journal of Autism and Developmental Disorders, 45, 626-635.