University of Calgary

Brandy Callahan

  • Assistant Professor
  • Tier II CRC Neuropsychology

Research Profile

I am not currently recruiting any new students or volunteers.

Broadly speaking, my research aims to improve the early diagnosis of dementia in older adults. I am particularly interested in how to best recognize early signs of neurodegenerative disease in individuals who have complex clinical presentations, including co-morbid medical, neurological, or psychiatric conditions that may mimic or increase dementia risk (in particular, later-life ADHD). A second important area of my research involves determining the most accurate methods of assessing cognition and predicting future decline. My work is heavily based in neuropsychology, and also integrates neuroimaging and neuropathological tools to draw conclusions about progression and mechanisms of disease.

A complete list of my publications can be found here.

Recent Publications

Prentice, J.L., Schaeffer, M.J., Wall, A.K., & Callahan, B.L. (2021). A systematic review and comparison of neurocognitive features of late-life attention deficit/hyperactivity disorder and dementia with Lewy bodies. Journal of Geriatric Psychiatry and Neurology, 34(5), 466-481, DOI: 10.1177/0891988720944251.

Callahan, B.L., McLaren-Gradinaru, M., Burles, F. & Iaria, G. (2021). How does dementia begin to manifest in bipolar disorder? A description of prodromal clinical and cognitive changes. Journal of Alzheimer’s Disease, 82:737-748. DOI: 10.3233/JAD-201240

Sharma, M.J., Lavoie, S., & Callahan, B.L. (2021). A call for research on the validity of the age-of-onset criterion application in older adults being evaluated for ADHD: A review of the literature in clinical and cognitive psychology. American Journal of Geriatric Psychiatry, 29(7):669-678. DOI: 10.1016/j.jagp.2020.10.016.

Sharma, M.J. & Callahan, B.L. (2021). Cerebrovascular and neurodegenerative pathologies in long-term stable mild cognitive impairment. Journal of Alzheimer’s Disease, 79:1269-1283. DOI: 10.3233/JAD-200829

Huang, V., Hogan, D.B., Ismail, Z., Maxwell, C.J., Smith, E.E. & Callahan, B.L. (2020). Evaluating the real-world representativeness of participants with mild cognitive impairment in Canadian research protocols: a comparison of the characteristics of a memory clinic patients and research samples. Canadian Geriatrics Journal, 23(4):297-328. DOI: 10.5770/cgj.23.416.

Callahan, B.L. (2020). On the misalignment between research and clinical practice in psychology: An example from the Alzheimer’s and dementia field. Canadian Psychology/Psychologie canadienne, 61(2), 127–139. DOI: 10.1037/cap0000204

Callahan, B.L. (2020). Operationalizing impaired performance in neuropsychological assessment: A comparison of the use of published versus sample-based normative data for the prediction of dementia. Journal of the International Neuropsychological Society, 1-8. DOI: 10.1017/S1355617719001309.

Callahan, B.L.* & Plamondon, A.* (2019). Examining the validity of the ADHD concept in adults and older adults. CNS Spectrums, 24(5):518-525. DOI: 10.1017/S1092852918001190.

Schaeffer, M.J. & Callahan, B.L. (2019). Investigating the association between verbal forgetting and pathological markers of Alzheimer’s and Lewy body diseases. Journal of Alzheimer’s Disease, 70(3):877-887. DOI: 10.3233/JAD-180962.

Alber, J., Alladi, S., Bae, H.J., Barton, D.A., Beckett, L., Bell, J.M., Berman, S.E., Biessels, G.J., Black, S.E., Bos, I., Bowman, G.L., Brai, E., Brickman, A.M., Callahan, B.L., Corriveau, R.A., Fossati, S., Gottesman, R.F., Gustafson, D.R., Hachinski, V., Hayden, K.M., Helman, A.M., Hughes, T.M., Isaacs, J.D., Jefferson, A.L., Johnson, S.C., Kapasi, A., Kern, S., Kwon, J.C., Kukolja, J., Lee, A., Lockhart, S.N., Murray, A.M., Osborn, K.E., Power, M.C., Price, B.R., Rhodius-Meester, H.F.M., Rondeau, J.A., Rosen, A.C., Rosene, D.L., Schneider, J.A., Scholtzova, H., Shaaban, C.E., Silva, N.C.B.S., Snyder, H.M., Swardfager, W., Troen, A.M., van Veluw, S.J., Vemuri, P., Wallin, A., Wellington, C.L., Wilcock, D.M., Xie, S.X., Hainsworth, A.H. (2019). White matter hyperintensities in vascular contributions to cognitive impairment and dementia (VCID). Knowledge gaps and opportunities. Alzheimer’s & Dementia, 5:107-117. DOI: 10.1016/j.trci.2019.02.001.

Callahan, B.L., & Anderson, N.D. (2019). Effect of conceptual and lexical errorless versus trial-and-error learning in amnestic mild cognitive impairment. Neuropsychological Rehabilitation, 29(6):969-982. DOI: 10.1080/09602011.2017.1361843. 

Callahan, B.L., Bierstone, D., Stuss, D.T., & Black, S.E. (2017). Adult ADHD: Risk factor for dementia or phenotypic mimic? Frontiers in Aging Neuroscience, 9(260):1-15. DOI: 10.3389/fnagi.2017.00260. 

Edwards, J.D., Ramirez, J., Callahan, B.L., Tobe, S., Oh, P., Berezuk, C., Lanctôt, K., Swardfager, W., Nestor, S., Kiss, A., Strother, S., & Black, S.E. (2017). Antihypertensive treatment is associated with imaging markers of neurodegeneration and cognition: A propensity-weighted cohort study. Journal of Alzheimer’s Disease, 59(3):1113-1122. DOI: 10.3233/JAD-170238. 

Cohen-Mansfield, J., Ray, C.A., Hai, T., Marcu, C., Callahan, B.L. & Freedman, M. (2017). The ultimate outlier: Transitional care for persons with dementia and BPSD. Current Alzheimer Research, 14:1-9. DOI: 10.2174/1567205014666170515141710. 

Berezuk, C., Zakzanis, K.K., Ramirez, J., Ruocco, A.C., Edwards, J.D., Callahan, B.L. & Black, S.E. (2017). Experience participating in instrumental activities of daily living is associated with functional independence and sex differences in mild cognitive impairment. Journal of Alzheimer’s Disease, 58(2), 425-434. DOI: 10.3233/JAD-161227. 

Lin, V.Y.W., Chung, J., Callahan, B.L., Smith, L., Gritters, N., Chen, J., Black, S.E. & Masellis, M.J. (2017). The development of a cognitive screening test for the severely hearing impaired: the Hearing Impaired Montreal Cognitive Assessment (HI-MoCA). The Laryngoscope, 127(Suppl 1):S4-S11. DOI: 10.1002/lary.26590. 

Yassin, W., Callahan, B.L., Ubukata, S., Sugihara, G., Murai, T., & Ueda, K. (2017). Facial emotion recognition in focal and diffuse axonal injury patients. Brain Injury, 31(5):624-630. DOI: 10.1080/02699052.2017.1285052 

Callahan, B.L., Laforce, R.Jr., Dugas, M., & Hudon, C. (2017). Memory for emotional images differs according to the presence of depressive symptoms in mild cognitive impairment. International Psychogeriatrics, 29(4):673-685. DOI: 10.1017/S1041610216002179.

Dallaire-Théroux, C., Callahan, B.L., Potvin, O., Saikali, S., & Duchesne, S. (2017). Radiological-pathological correlation in Alzheimer’s disease: systematic review of pre-mortem MRI findings. Journal of Alzheimer’s Disease, 57(2):575-601. DOI: 10.3233/JAD-161028.


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