TTU Home Department of Psychological Sciences Home All Faculty Clinical Faculty

Faculty Member - Adjunct

Sid E. O’Bryant, Ph.D.

Sid O'Bryant photo


  • Director, Rural Health Research, F. Marie Hall Institute for Rural & Community Health, TTUHSC
  • Assistant Professor, Department of Neurology, TTUHSC
  • Adjunct Assistant Professor, Department of Psychological Sciences, TTU


Ph.D., University at Albany, State University of New York, 2004


Licensed Psychologist - Texas


Phone: (806) 743-1338, ext. 271

Fax: (806) 743-4510


Awards and Honors:

2006-2010 - Loan Repayment Program recipient National Institutes of Health (NIH)/National Center on Minority Health and Health Disparities (NCMHD)

2009 - Early Career Award, National Academy of Neuropsychology

2009 - Nelson Butter’s Award, co-recipient, National Academy of Neuropsychology

2006 - National Institute on Aging Summer Institute on Aging Research

Research Support:

Genetics and Biomarkers Study of Alzheimer’s Disease – The Texas Alzheimer’s Research Consortium, Texas Counsel on Alzheimer’s Disease and Related Disorders (TTUHSC Site PI and Steering Committee Member); Arsenic Exposure and Alzheimer’s Disease, South Plains Foundation (PI); Normative Data for the RBANS among English-Speaking Mexican Americans, National Academy of Neuropsychology (PI); A Community-Based Respite Care Program: A Project FRONTIER study, Carl B. & Florence E. King Foundation (Co-PI)

Research Interests:

My primary interest is translational/transdisciplinary research with particular emphasis on biomarker mediators of neuropsychological functioning and decline, which I conduct through 2 ongoing projects: (1) Project FRONTIER (Facing Rural Obstacles to healthcare Now Through Intervention, Education and Research), which is an epidemiological community-based participatory research (CBPR) study aimed at understanding health issues in rural multi-ethnic communities. Topics being studies include, but are not limited to, dementia and cognitive dysfunction, cardiovascular disease, obesity, diabetes, tobacco and alcohol use, environmental exposures, depression and anxiety, as well as how these health indicators vary according to gender, ethnicity, and SES. (2) The Texas Alzheimer’s Research Consortium (TARC), which is a longitudinal study of genetics and biomarkers associated with Alzheimer’s disease. My particular focus in this study is the evaluation of blood-based proteins (inflammatory and others) that have potential diagnostic, prognostic, and therapeutic utility.

Selected Research:

  • O’Bryant, SE, Lacritz, L, Hall, J, Waring, S, Chan, W, Khodr, ZG, Massman, P.J, Hobson, V, & Cullum, CM (in press). Validation of the New Interpretive Guidelines for the Clinical Dementia Rating Scale Sum of Boxes Score in the NACC Database. Archives of Neurology.
  • O'Bryant, SE, Waring, SC, Hobson, V, Hall, JR, Moore, CB, Bottiglieri, T, Massman, P, & Diaz-Arrstia, R (in press). Decreased C-Reactive Protein Levels in Alzheimer's Disease. Journal of Geriatric Psychiatry and Neurology.
  • Hobson, VL, Hall, JR, Humphreys-Clark, JD, Schrimsher, GW, & O’Bryant, SE (in press). Identifying functional impairment with scores from the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). International Journal of Geriatric Psychiatry.
  • Gong, G, Braddock, E, Zhang, Y, Hudson, C, Lefforge, D, & O’Bryant, SE (in press). Trend and racial disparities in infant mortality rates in Texas from 1990 to 2004. Journal of the National Medical Association.
  • Gong, G, Braddock, E, O’Bryant, SE, Hudson, C, Scott-Fleming, I, Bishara, J, Danner, P, Voyles, D, Yang, H, Patterson, P, & Lefforge, D (in press). Trend analysis of the supply of primary care physicians in rural and urban East, South, and West Texas from 1981 to 2007. Texas Public Health Journal.
  • Mendoza, JE, Apostolos, GT, Humphreys-Clark, JD, Hanna-Pladdy, B, & O’Bryant, SE (2009). The Coin Rotation Task (CRT): A new test of motor dexterity. Archives of Clinical Neuropsychology, 24(3), 287-292.
  • Duff, K, O’Bryant, SE, Westervelt, H, Sweet, J, Reynolds, CR, van Gorp, WG, Tranel, D, & McCaffrey, RJ (2009). On becoming a peer reviewer for a neuropsychological journal. Archives of Clinical Neuropsychology, 24(3), 201-208.
  • O’Bryant, SE, Hobson, V, Hall, J, Lacritz, L, Massman, P, Cullum, M, Diaz-Arrastia, R. (2009). Brain-derived neurotropic factor (BDNF) in Alzheimer’s disease. A project of the Texas Alzheimer’s Research Consortium (TARC). Journal of Alzheimer’s Disease, 17(2), 1051-1055.
  • O’Bryant, S.E., Zhang, Y., Owen, D., Cherry, B., Ramirez, V., Silva, M., Hudson, C., Hobson, V., Grammas, P., Schiffer, R.B., Manning, G., Schrimsher, G.W., Lucas, J.A., Sutker, P.B. for the Cochran County Aging Study Research Team (2009). The Cochran County Aging Study: Methodology and Descriptive Statistics. Texas Public Health Journal, 61(1), 5-7.
  • Ashcraft, A., Owen, D., Braddock, E, Waring, S, & O’Bryant, S.E. (2009). Rural West Texans: Healthcare implications of “living the simple life.” Texas Public Health Journal, 61(1), 8-12.
  • Zhang, Y., Spering, C, Jenkins, M, & O’Bryant, S.E. (2009). An examination of health-related gender differences in a rural-dwelling cohort. Texas Public Health Journal, 61(1), 17-21.
  • Hobson, V., Spering, C., Humphreys, J.D., & O’Bryant, S.E. (2009). An evaluation of the age- and education-adjusted MMSE scores among rural dwelling Mexican American elders: The Cochran County Aging Study. Texas Public Health Journal, 61(1), 22-24.