Roger A. Dixon

Recent Conference Presentations

Current Year: 2011-2009

DeCarlo, C.A., Vergote, D., MacDonald, S.W.S., Whitehead, B.P., Westaway, D., Jhamandas, J., & Dixon, R.A. Genetic markers of cognitive status and stability in the Victoria Longitudinal Study. International Society for the Study of Behavioral Development, Edmonton, AB (July 2012).

McFall, G.P., Wiebe, S.A., & Dixon, R.A. Does Type 2 Diabetes influence level and slope of executive functioning in older adults? International Society for the Study of Behavioral Development, Edmonton, AB (July 2012).

Whitehead, B.P., Vergote, D., McFall, G.P., Sapkota, S., Westaway, D., Jhamandas, J., & Dixon, R.A. Exploring associations among genetic risk factors and cognition in healthy and diabetic older adults. International Society for the Study of Behavioral Development, Edmonton, AB (July 2012).

Alwerdt, J., Small, B.J., & Dixon, R.A. Personality traits and cognitive performance in aging: Level but not slope effects. Cognitive Aging Conference, Atlanta, GA (April 2012).

DeCarlo, C.A., Vergote, D., Whitehead, B.P., MacDonald, S.W.S., Westaway, D., Jhamandas, J., & Dixon, R.A. Testing independent and interactive associations among genetic and other biomarkers of cognitive risk, status, and stability in the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA (April 2012).

Hendrix-Buxton, S., Small, B.J., McFall, G.P., & Dixon, R.A. Apolipoprotein E genotype moderates the benefits of lifestyle activities on cognitive decline: Evidence from the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA (April 2012).

McFall, G.P., Wiebe, S.A., & Dixon, R.A. Longitudinal analyses of executive functions in older adults: Modifying role of Type 2 Diabetes and the IDE polymorphism. Cognitive Aging Conference, Atlanta, GA (April 2012).

Whitehead, B.P., Sapkota, S., McFall, G.P., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. Testing effects of BDNF and COMT polymorphisms on cognitive functioning in normal aging and Type 2 Diabetes: Two replication and extension studies. Cognitive Aging Conference, Atlanta, GA (April 2012).

McFall, G.P., Wiebe, S.A., & Dixon, R.A. Longitudinal analyses of executive functioning in aging: Modifying roles for Type 2 Diabetes and IDE polymorphism. 26th Annual Joseph R. Royce Research Conference, University of Alberta (March 2012).

Sapkota, S., McFall, G.P., Whitehead, B.P., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. Effects of COMT and BDNF polymorphisms on neurocognitive functioning in normal aging. 26th Annual Joseph R. Royce Research Conference, University of Alberta (March 2012).

de Frias, C.M., & Dixon, R.A. Lifestyle engagement affects executive functions: Comparing cognitively elite, normal and impaired older adults. American Association for the Advancement of Science, Vancouver, BC (February 2012).

Whitehead, B.P., Vergote, D., McFall, G.P., Sapkota, S., MacDonald, S.W.S., Lechelt, K., Camicioli, R., Westaway, D., Jhamandas, J., & Dixon, R.A. Neurocognitive effects of genetic risk factors for Alzheimer's disease in Type 2 Diabetes patients. Glenrose Hospital SORB, Edmonton, AB (November 2011).

Dixon, R.A. (Chair). Neurocognition: Diabetes and the brain. American Diabetes Association, Alexandria, VA (October 2011).

Dixon, R.A. Brain, cognition, and aging: Longitudinal and epidemiological perspectives. Invited talk presented at the University of Alberta Association of Professors Emeriti, Edmonton, AB (March 2011).

Whitehead, B.P., Vergote, D., McFall, G.P., MacDonald, S.W.S., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. Allelic distributions of APOE, BDNF, and COMT: Toward neurogenetic analyses of healthy aging, mild cognitive impairment, and Alzheimer's disease. 25th Annual Joseph R. Royce Research Conference, University of Alberta (March 2011).

Burton, R., Dixon, R.A., Lek, I., & Caplan, J.B. Qualitatively similar associative interference across the lifespan. International Neuropsychological Society, Boston, MA (February 2011).

Dixon, R.A., de Frias, C.M., Whitehead, B.P., & McFall, G.P. Does cognitive status moderate memory aging: Comparing cognitively elite, normal, and impaired older adults. International Neuropsychological Society, Boston, MA (February 2011).

McFall, G.P., Whitehead, B.P., Demsky, A., & Dixon, R.A. Effects of obesity on cognition: Differential roles of age and gender. International Neuropsychological Society, Boston, MA (February 2011).

de Frias, C.M., Dixon, R.A., & Camicioli, R. Neurocognitive speed and inconsistency in Parkinson's disease with and without incipient dementia: An 18-month longitudinal study. Dallas Aging and Cognitive Neuroscience Conference, Dallas, TX (February 2011).

Whitehead, B.P., Vergote, D., McFall, G.P., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. Exploring genetic factors in healthy aging, mild cognitive impairment, and Alzheimer's disease. Translational Neuroscience Symposium, Edmonton, AB (December 2010).

Whitehead, B.P., McFall, G.P., Vergote, D., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. Exploring genetic factors in healthy aging, mild cognitive impairment, and Alzheimer's disease. Glenrose Hospital Foundation Spotlight on Research, Edmonton, AB (November 2010).

de Frias, C.M., & Dixon, R.A. Cognitive status and executive functions in older adults: The modulating effects of active living. Gerontological Society of America Annual Scientific Meeting, New Orleans, LA (November 2010).

Dixon, R.A., & MacDonald, S.W.S. Overview of the VLS: Longitudinal and epidemiological research on aging. Advanced Psychometrics Methods Workshop, Friday Harbor, WA (September 2010).

Braslavsky, A., Dixon, R.A., Tuokko, H., & MacDonald, S.W.S. Predicting mild cognitive impairment status with markers of cognitive and physiological change. International Conference on Alzheimer's Disease, Honolulu, Hawaii (July 2010).

DeCarlo, C.A., MacDonald, S.W.S., & Dixon, R.A. Revisiting Birren’s BioAge: Linking biological and cognitive processes in the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA (April 2010).

de Frias, C.M., Dixon, R.A., & Camicioli, R. Neurocognitive inconsistency in Parkinson’s disease and normal aging: An 18-month longitudinal study. Cognitive Aging Conference, Atlanta, GA (April 2010).

Dolcos, S., Braslavsky, A., Geall, B.P., MacDonald, S.W.S., & Dixon, R.A. Is mild cognitive impairment associated with markers of biological vitality and lifestyle activity? Cognitive Aging Conference, Atlanta, GA (April 2010).

Geall, B.P., Dixon, R.A., MacDonald, S.W.S., Fischer, A.L., & Hultsch, D.F. Intraindividual variability in neurocognitive speed performance in Type 2 Diabetes. Cognitive Aging Conference, Atlanta, GA (April 2010).

McFall, G.P., Dolcos, S., MacDonald, S.W.S., & Dixon, R.A. Do biomarkers mediate Type 2 Diabetes-cognition relationships: Exploring structural models. Cognitive Aging Conference, Atlanta, GA (April 2010).

Small, B.J., Dixon, R.A., & McArdle, J.J. Tracking cognitive change from 55 to 95 years of age: Findings from the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA (April 2010).

Dolcos, S., Sung, K., Denkova, E., Suen, K., Li, J., Dixon, R.A., & Dolcos, F. Age-related differences in the effects of automatic and deliberate emotion regulation: A functional magnetic resonance imaging investigation. Annual Meeting of the Cognitive Neuroscience Society, Montreal, QC (April 2010).

Dixon, R.A. Longitudinal perspectives on memory change and aging. The 8th Tsukuba International Conference on Memory, Tsukuba, Japan (March 2010).

Demsky, A.N., McFall, G.P., Geall, B.P., & Dixon, R.A. Exploring the effects of obesity on cognition. 24th Annual Joseph R. Royce Research Conference, University of Alberta (March 2010).

Dolcos, S., Braslavsky, A., Geall, B.P., MacDonald, S.W.S., & Dixon, R.A. Is mild cognitive impairment associated with markers of biological vitality and lifestyle activity? 24th Annual Joseph R. Royce Research Conference, University of Alberta (March 2010).

Geall, B.P., Dixon, R.A., MacDonald, S.W.S., Fischer, A.L., & Hultsch, D.F. Intraindividual variability in neurocognitive speed performance in Type 2 Diabetes. 24th Annual Joseph R. Royce Research Conference, University of Alberta (March 2010).

McFall, G.P., Dolcos, S., MacDonald, S.W.S., & Dixon, R.A. Do biomarkers mediate Type 2 Diabetes-cognition relationships: Exploring structural models. 24th Annual Joseph R. Royce Research Conference, University of Alberta (March 2010).

Wang, R., McFall, G.P., & Dixon, R.A. Olfactory identification and cognitive functions in aging. 24th Annual Joseph R. Royce Research Conference, University of Alberta (March 2010).

Dolcos, S., Denkova, E., Sung, K., Dixon, R.A., & Dolcos, F. Increased automatic control in healthy elderly: Evidence for the positive affective bias in aging. Aging and Cognition Conference, Dallas, TX (February 2010).

Dixon, R.A. Epidemiological perspectives on "cognitive health" in aging: Illustrations from the Victoria Longitudinal Study. CIHR Aging Conference, Banff, AB (February 2010).

Dixon, R.A. Longitudinal approaches to neurocognitive aging, impairment, and dementia. Translational Neuroscience Symposium: From Molecule to Mind, University of Alberta (December 2009).

McFall, G.P., Geall, B.P., Fischer, A.L., Dolcos, S., & Dixon, R.A. Moderators and mediators of cognitive deficits associated with aging and Type 2 Diabetes. Gerontological Society of America Annual Scientific Meeting, Atlanta, GA (November 2009).

Dixon, R.A., & MacDonald, S.W.S. Overview of the VLS: A human research platform for testing genetic and epigenetic associations in healthy aging, mild cognitive impairment, and sporadic Alzheimer's disease. Centre for Prions and Protein Folding Diseases, University of Alberta (October 2009).

MacDonald, S.W.S., & Dixon, R.A. Linking biological and cognitive aging: Improving characterizations of developmental time. Cognition, Health and Aging Conference, Penn State University (October 2009).

DeCarlo, C.A., MacDonald, S.W.S., & Dixon, R.A. Beyond chronological age: A multi-causal conceptualization of development. Cognition, Health and Aging Conference, Penn State University (October 2009).

Earlier Cognitive Aging Conferences:
Adelaide, Australia, 2007; Atlanta, Georgia, 2008, 2006, 2004, 2002

Dixon, R.A. An epidemiological approach to cognitive health in aging: Illustrations from the Victoria Longitudinal Study. (Invited Address, Adelaide, August 2007)

MacDonald, S.W.S. Overview of intraindividual variability in cognitive and neurocognitive aging. (Invited Overview Paper, Atlanta, April 2008)

de Frias, C.M., Dixon, R.A., & Strauss, E. Executive functioning in special populations: From cognitively elite to cognitively impaired. (Atlanta, 2008)

Small, B.J., Dixon, R.A., McArdle, J.J., & Grimm, K.J. Changes in lifestyle activities in relation to changes in cognitive abilities: 12-year data from the Victoria Longitudinal Study. (Atlanta, 2008)

Yeung, S.E., Fischer, A.L., & Dixon, R.A. Exploring effects of Type 2 Diabetes on cognitive performance in older adults. (Atlanta, 2008)

Dixon, R.A., & de Frias, C.M. Mild memory deficits differentially affect six-year changes in compensatory strategy use. (Atlanta, 2006)

Dixon, R.A., Garrett, D.D., Lentz, T., MacDonald, S.W.S., Strauss, E., & Hultsch, D.F. Neurocognitive markers of mild cognitive impairment: Speed and inconsistency. (Atlanta, 2006)

Feltmate, S.E., Gagnon, L.M., Kang, S.J., & Dixon, R.A. Exploring metacognitive characteristics of collaborative dyads. (Atlanta, 2006)

Garrett, D.D., MacDonald, S.W.S., & Dixon, R.A. Characteristics of the cognitive battery affect prevalence and stability of subclinical cognitive impairment. (Atlanta, 2006)

Small, B.J., McArdle, J.J., MacDonald, S.W.S., & Dixon, R.A. Growth-survival models of terminal decline: Effects of initial level and change in cognition. (Atlanta, 2006)

Tippe, S.E., de Frias, C.M., & Dixon, R.A. Do NSAIDs buffer cognitive decline in normal aging? Evidence from the Victoria Longitudinal Study. (Atlanta, 2006)

de Frias, C.M., & Dixon, R.A. Memory compensation: Structure, invariance, variability and memory correlates.(Atlanta, 2004)

Dixon, R.A., MacDonald, S.W.S., & Hultsch, D.F. Revisiting the terminal decline hypothesis: New evidence for enduring questions. (Atlanta, 2004)

Hertzog, C., Dixon, R.A., Hultsch, D.F., & Maitland, S.B. Does longitudinal memory change correlate with (either) subjective memory change (or) change in subjective memory? (Atlanta, 2004)

Mansueti, L., Westbury, C.F., & Dixon, R.A. Cognitive functioning following mild stroke in older adults: Occupational, lifestyle, and activities effects. (Atlanta, 2004)

Wahlin, Å., MacDonald, S.W.S., de Frias, C.M., Nilsson, L-G., & Dixon, R.A. How health and biological age influence chronological age and sex differences in cognitive aging: Moderating, mediating, or both? (Atlanta, 2004)

Cohen, A.-L., Dixon, R.A., & Lindsay, S. The intention superiority effect in young and older adults. (Atlanta, 2002)

de Frias, C.M., & Dixon, R.A. Individual growth curve trajectories in memory compensation strategies. (Atlanta, 2002)

MacDonald, S.W.S., Hultsch, D.F., & Dixon, R.A. Longitudinal profiles of terminal drop: Associations between cognitive decline, age differences, and mortality. (Atlanta, 2002)

Selected Titles From Other Conferences

Bielak, A., Hughes, T.F., Small, B.J., & Dixon, R.A. Does an engaged lifestyle predict cognitive level and intraindividual variability 6 years later? (Gerontological Society of America, 2005)

Hughes, T.F., Bielak, A., Small, B.J., & Dixon, R.A. Lifestyle activities, cognitive reserve, and intraindividual variability in cognitive functioning. (Gerontological Society of America, 2005)

MacDonald, S.W.S., & Dixon, R.A. Vascular implications for cognitive trajectories of terminal decline: Findings from the Victoria Longitudinal Study. In C. Brady & A. Spiro (Chairs), Symposium on: Vascular disease and cognition: Multidisciplinary approaches. (Gerontological Society of America, 2005)

Small, B.J., Dixon, R.A., & McArdle, J.J. Health predictors of age-related changes in episodic memory. In S.M. Hofer (Chair), Symposium on: Associations among health, cognition, and personality: Evidence from longitudinal studies on aging. (Gerontological Society of America, 2005)

Dixon, R.A., de Frias, C.M., Strauss, E., & MacDonald, S.W.S. Structure of executive functioning tests in healthy older adults. (International Neuropsychological Society, 2003)

de Frias, C.M., Dixon, R.A., & Strauss, E. Executive functioning relates to memory compensation strategies in healthy older adults. (International Neuropsychological Society, 2003)

MacDonald, S.W.S., Garrett, D.D., Dixon, R.A., & Hultsch, D.F. Subclinical cognitive impairment in dlder adults: Stability of classification? (International Neuropsychological Society, 2003)

Dixon, R.A., MacDonald, S.W.S., & Garrett, D.D. Does head circumference relate to cognitive decline in healthy aging adults? (International Neuropsychological Society, 2003)

Hopp, G., Dixon, R.A., Strauss, E., & Moll, A. Effects of executive functioning on list learning in healthy and Parkinson's disease adults. (International Neuropsychological Society, 2003)

MacDonald, S.W.S., Garrett, D., Hultsch, D.F., & Dixon, R.A. Is intraindividual variability associated with mild cognitive impairment? (International Neuropsychological Society, 2003)

Demsky, A.N., McFall, G.P., Geall, B.P., & Dixon, R.A. Exploring the effects of obesity on cognition. (Royce Research Conference)

Geall, B.P., Dixon, R.A., MacDonald, S.W.S., Fischer, A.L., & Hultsch, D.F. Intraindividual variability in neurocognitive speed performance in Type 2 Diabetes. (Royce Research Conference)

McFall, G.P., Dolcos, S., MacDonald, S.W.S., & Dixon, R.A. Do biomarkers mediate Type 2 Diabetes-cognition relationships: Exploring structural models. (Royce Research Conference)

Wang, R., McFall, G.P., & Dixon, R.A. Olfactory identification and cognitive functions in aging. (Royce Research Conference)

Dolcos, S., & Dixon, R.A. Effects of conscious and nonconscious goal regulation on responses to emotional stimulation: From younger to older adults. (Royce Research Conference)

McFall, G.P., Geall, B., Fischer, A.L., Dolcos, S., & Dixon, R.A. Role of co-morbidities in moderating and mediating cognitive deficits associated with aging and Type 2 Diabetes. (Royce Research Conference)

Fischer, A.L., Yeung, S.E., & Dixon, R.A. Does Type 2 Diabetes affect cognitive performance in older adults? (Royce Research Conference)

Cochrane, K.M., Frender, R.H., & Dixon, R.A. Autobiographical memory cues support episodic memory in early AD. (Royce Research Conference)

Feltmate, S.E., & Dixon, R.A. Social engagement and the presence of mild cognitive impairment. (Royce Research Conference)

Yeung, S., & Dixon, R.A. Effects of Type 2 Diabetes on cognitive functioning in older adults: Data from the Victoria Longitudinal Study. (Royce Research Conference)

Tippe, S., de Frias, C.M., & Dixon, R.A. Do NSAIDs buffer cognitive decline: Evidence from the VLS. (Royce Research Conference)

Mansueti, L., & Dixon, R.A. Exploring episodic memory following mild stroke in older adults. (Royce Research Conference)