The first section of this page features selected VLS publications from the most recent decade, in reverse chronological order (2023 to 2008) and is organized into two categories:
The second section lists selected Current Research Projects and Interests of the VLS, organized by project theme.
Please contact vlslab@ualberta.ca for reprints and further information.
Recent VLS Publications
Recent Articles and Chapters
-2019-2023-
Bohn, L., Drouin, S.M., McFall, G.P., Rolfson, D.B., Andrew, M.K., & Dixon, R.A. (2023). Machine learning analyses identify multi-morbidity features that discriminate four cohorts in the Alzheimer’s disease spectrum: A COMPASS-ND study. Canadian Geriatrics Journal, 26(1), 205 (Abstract). https://doi.org/10.5770/cgj.26.659
Bohn, L., McFall, G.P., Gee, M., Postuma, R.B., Dixon, R.A., & Camicioli, R. (2023). Dementia risk prediction in a longitudinal geriatric Parkinson’s disease cohort: Evaluation and application of the Montréal Parkinson Risk of Dementia Scale. Canadian Geriatrics Journal, 26(1), 176-186. https://doi.org/10.5770/cgj.26.617
Caballero, S., McFall, G.P., Heal, M., Vergote, D., Andrews, S., Jhamandas, J., Westaway, D., Masellis, M., & Dixon, R.A. (2023). Do polygenic risk scores representing Alzheimer’s disease global risk or specific mechanisms predict non-demented memory aging trajectories differentially in females and males? Canadian Geriatrics Journal, 26(1), 206 (Abstract). https://doi.org/10.5770/cgj.26.659
Dixon, R.A., & Rajah, M.N. (2023). CCNA/CCNV Team 9 Bulletin: Biomarkers of aging and neurodegeneration (Issue 1, January). Edmonton/Montréal: Canadian Consortium on Neurodegeneration in Aging (In Partnership with Alberta Innovates and Canadian Institutes of Health Research).
McFall, G.P., Bohn, L., Drouin, S.M., Gee, M., Fah, H., Han, W., Li, L., Camicioli, R., & Dixon, R.A. (2023). Identifying key multi-modal predictors of incipient dementia in Parkinson's disease: A machine learning analysis and Tree SHAP interpretation. Frontiers in Aging Neuroscience, 15, Article 1124232. https://doi.org/10.3389/fnagi.2023.1124232
McFall, G.P., Bohn, L., Gee, M., Drouin, S.M., Han, W., Li, L., Camicioli, R., & Dixon, R.A. (2023). Identifying key multi-modal predictors of incipient dementia in Parkinson’s disease: Machine learning analyses and Tree SHAP interpretation. Canadian Geriatrics Journal, 26(1), 220 (Abstract). https://doi.org/10.5770/cgj.26.659
Zheng, L., Eramudugolla, R., Cherbuin, N., Drouin, S.M., Dixon, R.A., & Anstey, K.J. (2023). Gender specific factors contributing to cognitive resilience in APOE ɛ4 positive older adults in a population-based sample. Scientific Reports, 13, 8037. https://doi.org/10.1038/s41598-023-34485-1
Drouin, S.M., McFall, G.P., & Dixon, R.A. (2022). Subjective memory concerns, poor vascular health, and male sex predict exacerbated memory decline trajectories: An integrative data-driven class and prediction analysis. Neuropsychology, 36(2), 128-139. https://doi.org/10.1037/neu0000784
Drouin, S.M., McFall, G.P., Potvin, O., Bellec, P., Masellis, M., Duchesne, S., & Dixon, R.A. for the Alzheimer’s Disease Neuroimaging Initiative (2022). Data-driven analyses of longitudinal hippocampal imaging trajectories: Discrimination and biomarker prediction of change classes. Journal of Alzheimer's Disease, 88, 97-115. https://doi.org/10.3233/JAD-215289
Drouin, S.M., McFall, G.P., Zhang, L., Anstey, K.J., Masellis, M., Potvin, O., Duchesne, S., & Dixon, R.A. (2022). Memory resilience in cognitively normal older adults with advanced hippocampal atrophy. Canadian Geriatrics Journal, 25(1), 116 (Abstract). https://doi.org/10.5770/cgj.25.596
Harris, C.B., Sutton, J., Keil, P.G., McIlwain, N., Harris, S.A., Barnier, A.J., Savage, G., & Dixon, R.A. (2022). Ageing together: Interdependence in the memory compensation strategies of long-married older couples. Frontiers in Psychology, 13, Article 854051. https://doi.org/10.3389/fpsyg.2022.854051
Heal, M., McFall, G.P., Vergote, D., Jhamandas, J.H., Westaway, D., & Dixon, R.A. (2022). Bridging Integrator 1 (BIN1, rs6733839) and sex are moderators of vascular health predictions of memory aging trajectories. Journal of Alzheimer's Disease, 89, 265-281. https://doi.org/10.3233/JAD-220334
Sapkota, S., McFall, G.P., Masellis, M., Dixon, R.A., & Black, S.E. (2022). Differential cognitive decline in Alzheimer’s disease is predicted by changes in ventricular size but moderated by Apolipoprotein E and pulse pressure. Journal of Alzheimer's Disease, 85(2), 545-560. https://doi.org/10.3233/JAD-215068
Anstey, K.J., & Dixon, R.A. (2021). Resilience in midlife and aging. In K.W. Schaie & S.L. Willis (Eds.), Handbook of the psychology of aging (9th ed., pp. 287-300). Amsterdam: Elsevier. https://doi.org/10.1016/B978-0-12-816094-7.00023-4
Anstey, K.J., Peters, R., Mortby, M., Kiely, K.M., Eramudugolla, R., Cherbuin, N., Huque, H., & Dixon, R.A. (2021). Association of sex differences in dementia risk factors with sex differences in memory decline in a population-based cohort spanning 20-76 years. Scientific Reports, 11, Article 7710. https://doi.org/10.1038/s41598-021-86397-7
Bohn, L., Zheng, Y., McFall, G.P., & Dixon, R.A. (2021). Portals to frailty? Data-driven analyses detect early frailty profiles. Alzheimer's Research & Therapy, 13, Article 1. https://doi.org/10.1186/s13195-020-00736-w
Buzatto, A.Z., Tatlay, J., Bajwa, B., Mung, D., Camicioli, R., Dixon, R.A., & Li, L. (2021). Comprehensive serum lipidomics for detecting incipient dementia in Parkinson's disease. Journal of Proteome Research, 20(8), 4053-4067. https://doi.org/10.1021/acs.jproteome.1c00374
Caballero, H.S., McFall, G.P., Wiebe, S., & Dixon, R.A. (2021). Integrating three characteristics of executive function in non-demented aging: Trajectories, classification, and biomarker predictors. Journal of the International Neuropsychological Society, 27(2), 158-171. https://doi.org/10.1017/S1355617720000703
Caballero, H.S., McFall, G.P., Zheng, Y., & Dixon, R.A. (2021). Data-driven approaches to executive function performance and structure in aging: Integrating person-centered analyses and machine learning risk prediction. Neuropsychology, 35(8), 889-903. https://doi.org/10.1037/neu0000775
Dixon, R.A., & Bellec, P. (2021). CCNA/CCNV Team 9 Bulletin: Biomarkers of aging and neurodegeneration (Issue 1, June). Edmonton/Montréal: Canadian Consortium on Neurodegeneration in Aging (In Partnership with Alberta Innovates and Canadian Institutes of Health Research).
Sapkota, S., McFall, G.P., Masellis, M., & Dixon, R.A. (2021). A multimodal risk network predicts executive function trajectories in non-demented aging. Frontiers in Aging Neuroscience, 13, Article 621023. https://doi.org/10.3389/fnagi.2021.621023
Anstey, K.J., Peters, R., Zheng, L., Barnes, D.E., Brayne, C., Brodaty, H., Chalmers, J., Clare, L., Dixon, R.A., Dodge, H., Lautenschlager, N., Middleton, L., Qiu, C., Rees, G., Sahar, S., & Yaffe, K. (2020). Future directions for dementia and prevention research: An International Research Network on Dementia Prevention consensus. Journal of Alzheimer's Disease, 78(1), 3-12. https://doi.org/10.3233/JAD-200674
Badhwar, A., McFall, G.P., Sapkota, S., Black, S., Chertkow, H., Duchesne, S., Masellis, M., Li, L., Dixon, R.A., & Bellec, P. (2020). A multiomics approach to heterogeneity in Alzheimer's disease: Focused review and roadmap. Brain, 143(5), 1315-1331. https://doi.org/10.1093/brain/awz384
Bohn, L., McFall, G.P., Wiebe, S.A., & Dixon, R.A. (2020). Body mass index predicts cognitive aging trajectories selectively for females: Evidence from the Victoria Longitudinal Study. Neuropsychology, 34(4), 388-403. https://doi.org/10.1037/neu0000617
Dixon, R.A., & Bellec, P. (2020). CCNA/CCNV Team 9 Bulletin: Biomarkers of aging and neurodegeneration (Issue 1, May). Edmonton/Montréal: Canadian Consortium on Neurodegeneration in Aging (In Partnership with Alberta Innovates and Canadian Institutes of Health Research).
Dixon, R.A., & Bellec, P. (2020). CCNA/CCNV Team 9 Bulletin: Biomarkers of aging and neurodegeneration (Issue 2, December). Edmonton/Montréal: Canadian Consortium on Neurodegeneration in Aging (In Partnership with Alberta Innovates and Canadian Institutes of Health Research).
Drouin, S.M., McFall, G.P., & Dixon, R.A. (2020). In multiple facets of Subjective Memory Decline sex moderates memory predictions. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring, 12(1), e12089. https://doi.org/10.1002/dad2.12089
Katsumi, Y., Dolcos, S., Dixon, R.A., Fabiani, M., Stine-Morrow, E.A.L., & Dolcos, F. (2020). Immediate and long-term effects of emotional suppression in aging: A functional magnetic resonance imaging investigation. Psychology and Aging, 35(5), 676-696. https://doi.org/10.1037/pag0000437
Peters, R., Yasar, S., Anderson, C., Andrews, S.J., ... Dixon, R.A., ... McFall, G.P., ... & Anstey, K.J. (2020). Investigation of antihypertensive class, dementia, and cognitive decline: A meta-analysis. Neurology, 94(3), e267-e281. https://doi.org/10.1212/WNL.0000000000008732
Andrews, S.J., McFall, G.P., Booth, A., Dixon, R.A., & Anstey, K.J. (2019). Association of Alzheimer's disease genetic risk loci with cognitive performance and decline: A systematic review. Journal of Alzheimer's Disease, 69, 1109-1136. https://doi.org/10.3233/JAD-190342
Andrews, S.J., McFall, G.P., Dixon, R.A., & Anstey, K.J. (2019). Alzheimer's environmental and genetic risk scores are differentially associated with general cognitive ability and dementia severity. Alzheimer Disease & Associated Disorders, 33, 95-103. https://doi.org/10.1097/WAD.0000000000000292
Burton, R.L., Lek, I., Dixon, R.A., & Caplan, J.B. (2019). Associative interference in older and younger adults. Psychology and Aging, 34(4), 558-571. https://doi.org/10.1037/pag0000361
Chertkow, H., Borrie, M., Whitehead, V., Black, S.E., Feldman, H.H., Gauthier, S., Hogan, D.B., Masellis, M., McGilton, K., Rockwood, K., Tierney, M.C., Andrew, M., Hsiung, G.-Y.R., Camicioli, R., Smith, E.E., Fogarty, J., Lindsay, J., Best, S., Evans, E., Das, S., Mohaddes, Z., Pilon, R., Poirier, J., Phillips, N.A., MacNamara, E., Dixon, R.A., Duchesne, S., MacKenzie, I., & Rylett, R.J. (2019). The Comprehensive Assessment of Neurodegeneration and Dementia: Canadian Cohort Study. The Canadian Journal of Neurological Sciences, 46(5), 499-511. https://doi.org/ 10.1017/cjn.2019.27
Dixon, R.A., & Lachman, M.E. (2019). Risk and protective factors in cognitive aging: Advances in assessment, prevention, and promotion of alternative pathways. In G.R. Samanez-Larkin (Ed.), The aging brain: Functional adaptation across adulthood (pp. 217-263). Washington, DC: APA Books. https://doi.org/10.1037/0000143-009
Hertzog, C., McFall, G.P., Small, B.J., & Dixon, R.A. (2019). Age, cohort, and period effects on metamemory beliefs. Psychology and Aging, 34(8), 1077-1089. https://doi.org/10.1037/pag0000384
McFall, G.P., Bäckman, L., & Dixon, R.A. (2019). Nuances in Alzheimer's genetic risk reveal differential predictions of non-demented memory aging trajectories: Selective patterns by APOE genotype and sex. Current Alzheimer Research, 16(4), 302-315. https://doi.org/10.2174/1567205016666190315094452
McFall, G.P., McDermott, K.L., & Dixon, R.A. (2019). Modifiable risk factors discriminate memory trajectories in non-demented aging: Precision factors and targets for promoting healthier brain aging and preventing dementia? Journal of Alzheimer's Disease, 70, S101-S118. https://doi.org/10.3233/JAD-180571
Thibeau, S., McDermott, K.L., McFall, G.P., Rockwood, K., & Dixon, R.A. (2019). Frailty effects on non-demented cognitive trajectories are moderated by sex and Alzheimer's genetic risk. Alzheimer's Research & Therapy, 11, 55. https://doi.org/10.1186/s13195-019-0509-9
Thibeau, S., McFall, G.P., Camicioli, R., & Dixon, R.A. (2019). Physical activity and mobility differentially predict non-demented executive function trajectories: Do sex and APOE moderate these associations? Gerontology, 65, 640-648. https://doi.org/10.1159/000496442
-2018-
Dixon, R.A., & Bellec, P. (2018). BioTric/BioEcir CCNA Biomarkers Bulletin (Issue 2, pp. 1-4). Canadian Consortium on Neurodegeneration in Aging.
Huan, T., Tran, T., Zheng, J., Sapkota, S., Camicioli, R., Dixon, R.A., & Li, L. (2018). Metabolomics analyses of saliva detect novel biomarkers of Alzheimer's disease. Journal of Alzheimer's Disease, 65(4), 1401-1416. https://doi.org/10.3233/JAD-180711
MacDonald, S.W.S., Keller, C.J.C., Brewster, P.W.H., & Dixon, R.A. (2018). Contrasting olfaction, vision, and audition as predictors of cognitive change and impairment in non-demented older adults. Neuropsychology, 32(4), 450-460. https://doi.org/10.1037/neu0000439
Sapkota, S., & Dixon, R.A. (2018). A network of genetic effects on non-demented cognitive aging: Alzheimer’s genetic risk (CLU + CR1 + PICALM) intensifies cognitive aging genetic risk (COMT + BDNF) selectively for APOE ε4 carriers. Journal of Alzheimer's Disease, 62(2), 887-900. https://doi.org/10.3233/JAD-170909
Sapkota, S., Huan, T., Tran, T., Zheng, J., Camicioli, R., Li, L., & Dixon, R.A. (2018). Alzheimer's biomarkers from multiple modalities selectively discriminate clinical status: Relative importance of salivary metabolomics panels, genetic, lifestyle, cognitive, functional health, and demographic risk markers. Frontiers in Aging Neuroscience, 10, 296. https://doi.org/10.3389/fnagi.2018.00296
-2017-
Han, W., Sapkota, S., Camicioli, R., Dixon, R.A., & Li, L. (2017). Profiling novel metabolic biomarkers for Parkinson’s disease using in-depth metabolomic analysis. Movement Disorders, 32(12), 1720-1728. https://doi.org/10.1002/mds.27173
Harris, C., Barnier, A.J., Sutton, J., Keil, P.G., & Dixon, R.A. (2017). Going episodic: Collaborative inhibition and facilitation when long-married couples remember together. Memory, 25(8), 1148-1159. https://doi.org/10.1080/09658211.2016.1274405
MacDonald, S.W.S., Hundza, S., Love, J., Decarlo, C.A., Halliday, D.W., Brewster, P.W., Lukyn, T.V., Camicioli, R., & Dixon, R.A. (2017). Concurrent indicators of gait velocity and variability are associated with 25-year cognitive change: A retrospective longitudinal investigation. Frontiers in Aging Neuroscience, 9, 17. https://doi.org/10.3389/fnagi.2017.00017
McDermott, K., McFall, G.P., Andrews, S.J., Anstey, K.J., & Dixon, R.A. (2017). Memory resilience to Alzheimer's genetic risk: Sex effects in predictor profiles. Journal of Gerontology: Psychological Sciences, 72(6), 937-946. https://doi.org/10.1093/geronb/gbw161
McFall, G.P., Sapkota, S., Thibeau, S., & Dixon, R.A. (2017). Trajectories and modifiers of executive function: Normal aging to neurodegenerative disease. In S.A. Wiebe & J. Karbach (Eds.), Executive function: Development across the life span (pp. 263-277). Oxford, UK: Taylor & Francis. https://doi.org/10.4324/9781315160719-18
Sapkota, S., Bäckman, L., & Dixon, R.A. (2017). Executive function performance and change in aging is predicted by apolipoprotein E, intensified by catechol-O-methyltransferase and brain-derived neurotrophic factor, and moderated by age and lifestyle. Neurobiology of Aging, 52, 81-89. https://doi.org/10.1016/j.neurobiolaging.2016.12.022
Thibeau, S., McFall, G.P., Camicioli, R., & Dixon, R.A. (2017). Alzheimer's disease biomarkers interactively influence physical activity, mobility, and cognition associations in a non-demented aging population. Journal of Alzheimer's Disease, 60(1), 69-86. https://doi.org/10.3233/JAD-170130
-2016-
Brown, C.L., Robitaille, A., Zelinski, E.M., Dixon, R.A., Hofer, S.M., & Piccinin, A. (2016). Cognitive activity mediates the association between social activity and cognitive performance: A longitudinal study. Psychology and Aging, 31(8), 831-846. https://doi.org/10.1037/pag000134.
DeCarlo, C.A., MacDonald, S.W.S., Vergote, D., Jhamandas, J., Westaway, D., & Dixon, R.A. (2016). Vascular health, genetic risk and Mild Cognitive Impairment status and four-year stability: Evidence from the Victoria Longitudinal Study. Journal of Gerontology: Psychological Sciences, 71(6), 1004-1014. https://doi.org/10.1093/geronb/gbv043
McFall, G.P., Sapkota, S., McDermott, K.L., & Dixon, R.A. (2016). Risk-reducing apolipoprotein E and clusterin genotypes protect against the consequences of poor vascular health on executive function performance and change in non-demented older adults. Neurobiology of Aging, 42, 91-100. https://doi.org/10.1016/j.neurobiolaging.2016.02.032
Sapkota, S., Wiebe, S.A., Small, B.J., & Dixon, R.A. (2016). Apolipoprotein E and clusterin can magnify effects of personality vulnerability on declarative memory performance in non-demented older adults. International Journal of Geriatric Psychiatry, 31(5), 502-509. https://doi.org/10.1002/gps.4355
Thibeau, S., McFall, G.P., Wiebe, S.A., Anstey, K.J., & Dixon, R.A. (2016). Genetic factors moderate everyday physical activity effects on executive function in aging: Evidence from the Victoria Longitudinal Study. Neuropsychology, 30(1), 6-17. https://doi.org/10.1037/neu0000217
-2015-
Anstey, K.J., Eramudugolla, R., Hosking, D.E., Lautenschlager, N.T., & Dixon, R.A. (2015). Bridging the translation gap: From dementia risk assessment to advice on risk reduction. The Journal of Prevention of Alzheimer's Disease, 2(3), 189-198. https://doi.org/10.14283/jpad.2015.75
Caplan, J., Bottomley, M., Kang, P., & Dixon, R.A. (2015). Distinguishing rhythmic from non-rhythmic brain activity during rest in healthy neurocognitive aging. NeuroImage, 122, 341-352. https://doi.org/10.1016/j.neuroimage.2015.03.001
Martin, S., Mazzocco, C., Grosselin, A., Van der Elst, W., Dixon, R.A., Stephan, Y., Brouillet, D., & Maury, P. (2015). Compensating for memory losses throughout adulthood: Validation and normalization of the Memory Compensation Questionnaire for non-clinical French populations. Archives of Gerontology and Geriatrics, 60, 28-38. https://doi.org/10.1016/j.archger.2014.10.013
McFall, G.P., Wiebe, S.A., Vergote, D., Anstey, K.J., & Dixon, R.A. (2015). Alzheimer’s genetic risk intensifies neurocognitive slowing associated with diabetes in non-demented older adults. Alzheimer's & Dementia: Diagnosis, Assessment, & Disease Monitoring, 1(4), 395-402. https://doi.org/10.1016/j.dadm.2015.08.002
McFall, G.P., Wiebe, S.A., Vergote, D., Westaway, D., Jhamandas, J., Bäckman, L., & Dixon, R.A. (2015). ApoE and pulse pressure interactively influence level and change in the aging of episodic memory: Protective effects among ε2 carriers. Neuropsychology, 29(3), 388-401. https://doi.org/10.1037/neu0000150
Sapkota, S., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. (2015). Synergistic associations of COMT and BDNF with executive function in aging are selective and modified by APOE. Neurobiology of Aging, 36(1), 249-256. https://doi.org/10.1016/j.neurobiolaging.2014.06.020
-2014-
Anstey, K.J., & Dixon, R.A. (2014). Applying a cumulative deficit model of frailty to dementia: Progress and future challenges. Alzheimer's Research & Therapy, 6(9), 84. https://doi.org/10.1186/s13195-014-0084-z
Anstey, K.J., Eramudugolla, R., & Dixon, R.A. (2014). Contributions of a risk assessment approach to the prevention of Alzheimer's disease and dementia. Journal of Alzheimer's Disease, 42, S463-S473. https://doi.org/10.3233/JAD-141248
DeCarlo, C.A., Tuokko, H.A., Williams, D., Dixon, R.A., & MacDonald, S.W.S. (2014). BioAge: Toward a multi-determined, mechanistic account of cognitive aging. Ageing Research Reviews, 18, 95-105. https://doi.org/10.1016/j.arr.2014.09.003
de Frias, C.M., & Dixon, R.A. (2014). Lifestyle engagement affects cognitive status differences and trajectories on executive functions in older adults. Archives of Clinical Neuropsychology, 29(1), 16-25. https://doi.org/10.1093/arclin/act089
Dixon, R.A., DeCarlo, C.A., MacDonald, S.W.S., Vergote, D., Jhamandas, J., & Westaway, D. (2014). APOE and COMT polymorphisms are complementary biomarkers of status, stability, and transitions in normal aging and early mild cognitive impairment. Frontiers in Aging Neuroscience, 6, Article 236. https://doi.org/10.3389/fnagi.2014.00236
Dixon, R.A., & de Frias, C.M. (2014). Cognitively elite, cognitively normal, and cognitively impaired aging: Neurocognitive status and stability moderate memory performance. Journal of Clinical and Experimental Neuropsychology, 36(4), 418-430. https://doi.org/10.1080/13803395.2014.903901
Dolcos, S., Katsumi, Y., & Dixon, R.A. (2014). The role of arousal in the spontaneous regulation of emotions in healthy aging: An fMRI investigation. Frontiers in Psychology: Emotion Science, 5(681), 1-12. https://doi.org/10.3389/fpsyg.2014.00681
McFall, G.P., Wiebe, S.A., Vergote, D., Jhamandas, J., Westaway, D., & Dixon, R.A. (2014). IDE (rs6583817) polymorphism and pulse pressure are independently and interactively associated with level and change in executive function in older adults. Psychology and Aging, 29(2), 418-430. https://doi.org/10.1037/a0034656
Runge, S.K., Small, B.J., McFall, G.P., & Dixon R.A. (2014). APOE moderates the association between lifestyle activities and cognitive performance: Evidence of genetic plasticity in aging. Journal of the International Neuropsychological Society, 20(5), 478-486. https://doi.org/10.1093/geronb/gbq093
-2013-
Dixon, R.A. (2013). Collaborative memory research in aging: Perspectives on application. Journal of Applied Research in Memory and Cognition, 2(2), 128-130. https://doi.org/10.1016/j.jarmac.2013.05.001
Dixon, R.A., McFall, G.P., Whitehead, B.P., & Dolcos, S. (2013). Cognitive development in adulthood and aging. In R.M. Lerner, M.A. Easterbrooks, & J. Mistry (Eds.), Handbook of psychology: Vol. 6 Developmental psychology (2nd ed.; pp. 451-474). Editor-in-chief: I.B. Weiner. Hoboken, NJ: Wiley.
McFall, G.P., Wiebe, S.A., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. (2013). IDE (rs6583817) polymorphism and Type 2 diabetes differentially modify executive function in older adults. Neurobiology of Aging, 34, 2208-2216. https://doi.org/10.1016/j.neurobiolaging.2013.03.010
-2012-
Brown, C.L., Gibbons, L.E., Kennison, R.F., Robitaille, A., Lindwall, M., Mitchell, M.B., Shirk, S.D., Atri, A., Cimino, C.R., Benitez, A., MacDonald, S.W.S., Zelinski, E.M., Willis, S.L., Schaie, K.W., Johansson, B., Dixon, R.A., Mungas, D.M., Hofer, S.M., & Piccinin, A.M. (2012). Social activity and cognitive functioning over time: A coordinated analysis of four longitudinal studies. Journal of Aging Research, 2012, Article 287438. https://doi.org/10.1155/2012/287438
de Frias, C.M., Dixon, R.A., & Camicioli, R. (2012). Neurocognitive speed and inconsistency in Parkinson's disease with and without incipient dementia: An 18-month longitudinal study. Journal of the International Neuropsychological Society, 18, 764-772. https://doi.org/10.1017/S1355617712000422
Dixon, R.A., Small, B.J., MacDonald, S.W.S., & McArdle, J.J. (2012). Yes, memory declines with aging--but when, how, and why? In M. Naveh-Benjamin & N. Ohta (Eds.), Memory and Aging (pp. 325-347). New York: Psychology Press. https://doi.org/10.4324/9780203156513-22
Dolcos, S., MacDonald, S.W.S., Braslavsky, A., Camicioli, R., & Dixon, R.A. (2012). Mild cognitive impairment is associated with selected functional markers: Integrating concurrent, longitudinal, and stability effects. Neuropsychology, 26, 209-223. https://doi.org/10.1037/a0026760
Lindwall, M., Cimino, C.R., Gibbons, L.E., Mitchell, M.B., Benitez, A., Brown, C.L., Kennison, R.F., Shirk, S.D., Atri, A., Robitaille, A., MacDonald, S.W.S., Zelinski, E.M., Willis, S.L., Schaie, K.W., Johansson, B., Praetorius, M., Dixon, R.A., Mungas, D.M., Hofer, S.M., Piccinin, A.M. (2012). Dynamic associations of change in physical activity and change in cognitive function: Coordinated analyses of four longitudinal studies. Journal of Aging Research, 2012, Article 493598. https://doi.org/10.1155/2012/493598
Mitchell, M.B., Cimino, C.R., Benitez, A., Brown, C.L., Gibbons, L.E., Kennison, R.F., Shirk, S.D., Atri, A., Robitaille, A., MacDonald, S.W.S., Lindwall, M., Zelinski, E.M., Willis, S.L., Schaie, K.W., Johansson, B., Dixon, R.A., Mungas, D.M., Hofer, S.M., & Piccinin, A.M. (2012). Cognitively stimulating activities: Effects on cognition across four studies with up to 21 years of longitudinal data. Journal of Aging Research, 2012, Article 461592. https://doi.org/10.1155/2012/461592
Seaquist, E.R., Latteman, D.F., & Dixon, R.A. (2012). Diabetes and the brain. Diabetes, 61, 3056-3062. https://doi.org/10.2337/db12-0489
Small, B.J., Dixon, R.A., McArdle, J.J., & Grimm, K.J. (2012). Do changes in lifestyle engagement moderate cognitive decline in normal aging? Evidence from the Victoria Longitudinal Study. Neuropsychology, 26, 144-155. https://doi.org/10.1037/a0026579
Zheng, J., Dixon, R.A., & Li, L. (2012). Development of isotope labeling LC-MS for human salivary metabolomics and application to profiling metabolome changes associated with mild cognitive impairment. Analytical Chemistry, 84, 10802-10811. https://doi.org/10.1021/ac3028307
-2011-
Cohen, A.-L., Kantner, J., Dixon, R.A., & Lindsay, D.S. (2011). The intention interference effect: The difficulty of ignoring what you intend to do. Experimental Psychology, 58, 425-433. https://doi.org/10.1027/1618-3169/a000110
Dixon, R.A. (2011). Enduring theoretical themes in psychological aging: Derivation, functions, perspectives, and opportunities. In K.W. Schaie & S.L. Willis (Eds.), Handbook of the psychology of aging (7th ed.; pp. 3-23). San Diego, CA: Academic Press. https://doi.org/10.1016/b978-0-12-380882-0.00001-2
Dixon, R.A. (2011). Evaluating everyday competence in older adult couples: Epidemiological considerations. Gerontology, 57, 173-179. https://doi.org/10.1159/000320325
Dolcos, S., Sung, K., Denkova, E., Dixon, R.A., & Dolcos, F. (2011). Brain imaging investigation of the neural correlates of emotion regulation. Journal of Visualized Experiments, 54, e2430. https://doi.org/10.3791/2430
MacDonald, S.W.S., DeCarlo, C.A., & Dixon, R.A. (2011). Linking biological and cognitive aging: Towards improving characterizations of developmental time. Journal of Gerontology: Psychological Sciences, 66B, i59-i70. https://doi.org/10.1093/geronb/gbr039
MacDonald, S.W.S., Hultsch, D.F., & Dixon, R.A. (2011). Aging and the shape of cognitive change before death: Terminal decline or terminal drop? Journal of Gerontology: Psychological Sciences, 66B, 292-301. https://doi.org/10.1093/geronb/gbr001
Small, B.J., Dixon, R.A., & McArdle, J.J. (2011). Tracking differences in cognition-health changes from 55 to 95 years of age: Findings from the Victoria Longitudinal Study. Journal of Gerontology: Psychological Sciences, 66B, i153-i161. https://doi.org/10.1093/geronb/gbq093
Van der Elst, W., Hoogenhout, E.M., Dixon, R.A., De Groot, R.H.M., & Jolles, J. (2011). The Dutch Memory Compensation Questionnaire: Psychometric properties and regression-based norms. Assessment, 18, 517-529. https://doi.org/10.1177/1073191110370116
Whitehead, B.P., Dixon, R.A., Hultsch, D.F., & MacDonald, S.W.S. (2011). Are neurocognitive speed and inconsistency similarly affected in Type 2 diabetes? Journal of Clinical and Experimental Neuropsychology, 33, 647-657. https://doi.org/10.1080/13803395.2010.547845
Zahodne, L.B., Glymour, M.M., Sparks, C., Bontempo, D., Dixon, R.A., MacDonald, S.W.S., & Manly, J.J. (2011). Education does not slow cognitive decline with aging: 12-year evidence from the Victoria Longitudinal Study. Journal of the International Neuropsychological Society, 17, 1039-1046. https://doi.org/10.1017/S1355617711001044
-2010-
Dixon, R.A. (2010). An epidemiological approach to cognitive health in aging. In L. Bäckman & L. Nyberg (Eds.), Memory, aging, and the brain (pp. 144-166). London: Psychology Press.
McFall, G.P., Geall, B.P., Fischer, A.L., Dolcos, S., & Dixon, R.A. (2010). Testing covariates of Type 2 diabetes-cognition associations in older adults: Moderating or mediating effects? Neuropsychology, 24, 547-562. https://doi.org/10.1037/a0019246
-2009-
de Frias, C.M., Dixon, R.A., & Strauss, E. (2009). Characterizing executive functioning in older special populations: From cognitively elite to cognitively impaired. Neuropsychology, 23(6), 778-791. https://doi.org/10.1037/a0016743
Dixon, R.A., & de Frias, C.M. (2009). Long-term stability and variability in memory compensation among older adults: Evidence from the Victoria Longitudinal Study. Acta Psychologica Sinica, 41, 1091-1101. https://doi.org/10.3724/SP.J.1041.2009.01091
Fischer, A.L., de Frias, C.M., Yeung, S.E., & Dixon, R.A. (2009). Short-term longitudinal trends in cognitive performance in older adults with Type 2 diabetes. Journal of Clinical and Experimental Neuropsychology, 31, 809-822. https://doi.org/10.1080/13803390802537636
Hultsch, D.F., Bielak, A.A.M., Crow, C.B., & Dixon, R.A. (2009). The way we were: Perceptions of past memory change in older adults. In H.B. Bosworth & C. Hertzog (Eds.), Cognition in aging: Methodologies and applications (pp. 197-216). Washington, DC: American Psychological Association. https://doi.org/10.1037/11882-010
McFall, G.P., Geall, B., & Dixon, R.A. (2009). Is Type 2 diabetes associated with cognitive deficits in older adults? AAGMag, 26(2), 12-15.
Yeung, S.E., Fischer, A.L., & Dixon, R.A. (2009). Exploring effects of Type 2 diabetes on cognitive functioning in older adults. Neuropsychology, 23, 1-9. https://doi.org/10.1037/a0013849
-2008-
Dixon, R.A., Garrett, D.D., & Bäckman, L. (2008). Principles of compensation in cognitive neuroscience and neurorehabilitation. In D.T. Stuss, G. Winocur, & I.H. Robertson (Eds.), Cognitive neurorehabilitation (2nd ed.; pp. 22-38). Cambridge: Cambridge University Press. https://doi.org/10.1017/cbo9781316529898.004
Gagnon, L.M., & Dixon, R.A. (2008). Remembering and retelling stories in individual and collaborative contexts. Applied Cognitive Psychology, 22, 1275-1297. https://doi.org/10.1002/acp.1437
MacDonald, S.W.S., Hultsch, D.F., & Dixon, R.A. (2008). Predicting impending death: Inconsistency in speed is a selective and early marker. Psychology and Aging, 23, 595-607. https://doi.org/10.1037/0882-7974.23.3.595
Mansueti, L., de Frias, C.M., Bub, D., & Dixon, R.A. (2008). Exploring cognitive effects of self-reported mild stroke in older adults: Selective but robust effects on story memory. Aging, Neuropsychology, and Cognition, 15, 545-573. https://doi.org/10.1080/13825580701858216
Technical Reports
Dixon, R.A., Hertzog, C., & Hultsch, D.F. (2008). Metamemory in Adulthood (MIA) questionnaire. Technical Report (pp. 1-30). Edmonton, Canada: University of Alberta, Department of Psychology.
Dixon, R.A., & Bäckman, L. (2007). Memory Compensation Questionnaire (MCQ). Technical Report (pp. 1-16). Edmonton, Canada: University of Alberta, Department of Psychology.
Dixon, R.A., Hultsch, D.F., & Hertzog, C. (2007). Story recall: Measuring complex episodic memory in aging. Technical Report (pp. 1-58). Edmonton, Canada: University of Alberta, Department of Psychology.
Dixon, R.A., Hultsch, D.F., & Hertzog, C. (2007). VLS Personal Data Sheet (PDS). Technical Report (pp. 1-35). Edmonton, Canada: University of Alberta, Department of Psychology.
Dixon, R.A., Hultsch, D.F., & Hertzog, C. (2006). VLS Activity Lifestyle Questionnaire (VLS-ALQ). Technical Report (pp. 1-23). Edmonton, Canada: University of Alberta, Department of Psychology.
Dixon, R.A., Hultsch, D.F., & Hertzog, C. (2006). VLS memory exercises: Word lists. Technical Report (pp. 1-14). Edmonton, Canada: University of Alberta, Department of Psychology.
Selected Current Research Projects and Interests
Much research in the VLS is conducted with teams of collaborators. The teams include students (undergraduate, graduate), post-doctoral associates, and researchers from Canada and other countries. Some topics of current interest are listed below. For information about VLS research and any of these projects, please contact the VLS office (vlslab@ualberta.ca).
Longitudinal and Epidemiological Studies in Aging
Cognitive Neuroscience/Neuropsychology and Aging
Biological and Health Factors
Psychosocial, Lifestyle, and Environmental Aspects
©2023 Victoria Longitudinal Study