Mary E. Dozier

Director of Clinical Training
Psychology

Research Interests

My research has two overlapping foci: behavioral interventions for older adults and the presentation and treatment of hoarding disorder across the lifespan. Most recently I have been studying the impact of a rural context on hoarding disorder, with grant support from the American Psychological Foundation and the National Institute of Mental Health.

I am also interested in the impact of stigma on treatment-seeking behaviors and welcome opportunities to speak to lay audiences on the consequences of clutter across the clinical spectrum and the importance of object attachment to identity.

Google Scholar

*Indicates mentored graduate student

Williams, J.*, & Dozier, M. E. (2026). Characterization of Late-Life Hoarding Symptomology among Rural Adults. Clinical Gerontologist, 49(3), 542-557. https://doi.org/10.1080/07317115.2026.2643628 

Schaff, B.*, Williams, J.*, Nix, C. A.*, Porter, B., & Dozier, M. E. (2026). Neurocognitive profile of late life hoarding disorder using the NIH Toolbox Cognition Battery as an in-home assessment. Archives of Clinical Neuropsychology, 41(2). https://doi.org/10.1093/arclin/acag012 

Dozier, M. E., Williams, J.*, Schaff, B.*, Nix, C. A.* (2025). A behavioral paradigm to assess for change in difficulty discarding clutter in the home: Psychometric properties of the Hoarding Behavioral Approach Task (H-BAT). Journal of Psychopathology and Behavioral Assessment, 47, 20. https://doi.org/10.1007/s10862-025-10198-9 

Dozier, M. E. & Nix, C. A.* (2025). Home-based motivational interviewing for late life rural hoarding disorder: A pilot study. Aging and Mental Health, 29(3), 391-399. https://doi.org/10.1080/13607863.2024.2394577

Dozier, M. E., Wetherell, J. L., Amir, N., Weersing, V. R., Taylor, C. T., & Ayers, C. R. (2021). The Association between age and experienced emotions in hoarding disorder. Clinical Gerontologist, 44(5), 562-566. https://doi.org/10.1080/07317115.2020.1742833 

Dozier, M. E., Davidson, E. J., Pittman, J. O. E., & Ayers, C. R. (2020). Personality disorder traits in adults with hoarding disorder. Journal of Affective Disorders, 276, 191-196. https://doi.org/10.1016/j.jad.2020.07.033 

Dozier, M. E., Porter, B., & Ayers, C. R. (2016). Age of onset and progression of hoarding symptoms in older adults with hoarding disorder. Aging and Mental Health, 20(7), 736-742. https://doi.org/10.1080/13607863.2015.1033684 

For full publication lists follow me on Google Scholar and Research Gate.

Areas of Expertise

Behavioral Interventions
Generalist
Geropsychology
Hoarding Disorder
Motivational Interviewing

Education

Ph.D., Clinical Psychology, San Diego State University/UC San Diego Joint Doctoral Program in Clinical Psychology, 2019
Pre-doctoral Internship, Geropsychology Emphasis, South Texas Veterans Health Care System, 2019
M.S., Clinical Psychology, San Diego State University/UC San Diego Joint Doctoral Program in Clinical Psychology, 2015
B.A., Psychology, Philosophy, Rice University, 2011
Portrait of Mary Dozier
Director of Clinical Training
Associate Professor