Stuart W S MacDonald

Summary

Affiliation: Karolinska Institutet
Country: Sweden

Publications

  1. ncbi Rate of acquisition, adult age, and basic cognitive abilities predict forgetting: new views on a classic problem
    Stuart W S MacDonald
    Section of Psychology, Stockholm Gerontology Research Center, Stockholm, Sweden
    J Exp Psychol Gen 135:368-90. 2006
  2. ncbi Intraindividual variability in vigilance performance: does degrading visual stimuli mimic age-related "neural noise"?
    Stuart W S MacDonald
    Aging Research Center, Division of Geriatric Epidemiology, Neurotec, Karolinska Institutet, Stockholm, Sweden
    J Clin Exp Neuropsychol 28:655-75. 2006
  3. ncbi Increased response-time variability is associated with reduced inferior parietal activation during episodic recognition in aging
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    J Cogn Neurosci 20:779-86. 2008
  4. ncbi Intra-individual variability in behavior: links to brain structure, neurotransmission and neuronal activity
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Gavlegatan 16, S 113 30 Stockholm, Sweden
    Trends Neurosci 29:474-80. 2006
  5. ncbi Dopamine D(1) receptors and age differences in brain activation during working memory
    Lars Backman
    Aging Research Center, Karolinska Institutet, Gavlegatan 16, SE 113 30 Stockholm, Sweden
    Neurobiol Aging 32:1849-56. 2011
  6. ncbi Accelerated postmenopausal cognitive decline is restricted to women with normal BMI: longitudinal evidence from the Betula project
    Petra P Thilers
    Aging Research Center, NVS, Karolinska Institutet and Stockholm University, Stockholm, Sweden
    Psychoneuroendocrinology 35:516-24. 2010
  7. ncbi Simulating neurocognitive aging: effects of a dopaminergic antagonist on brain activity during working memory
    Hakan Fischer
    Aging Research Center, Karolinska Institute, Stockholm, Sweden
    Biol Psychiatry 67:575-80. 2010
  8. ncbi Trajectories of cognitive decline following dementia onset: what accounts for variation in progression?
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    Dement Geriatr Cogn Disord 31:202-9. 2011
  9. ncbi Preclinical cognitive trajectories differ for Alzheimer's disease and vascular dementia
    Erika J Laukka
    Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden
    J Int Neuropsychol Soc 18:191-9. 2012
  10. ncbi Predicting impending death: inconsistency in speed is a selective and early marker
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    Psychol Aging 23:595-607. 2008

Detail Information

Publications26

  1. ncbi Rate of acquisition, adult age, and basic cognitive abilities predict forgetting: new views on a classic problem
    Stuart W S MacDonald
    Section of Psychology, Stockholm Gerontology Research Center, Stockholm, Sweden
    J Exp Psychol Gen 135:368-90. 2006
    ..Observed correlates of differential forgetting slopes are similar to those previously found to affect encoding, suggesting continuity rather than asymmetry of prediction for these memory processes...
  2. ncbi Intraindividual variability in vigilance performance: does degrading visual stimuli mimic age-related "neural noise"?
    Stuart W S MacDonald
    Aging Research Center, Division of Geriatric Epidemiology, Neurotec, Karolinska Institutet, Stockholm, Sweden
    J Clin Exp Neuropsychol 28:655-75. 2006
    ..Results support current hypotheses suggesting that inconsistency serves as a marker of neurological integrity and are discussed in terms of potential underlying mechanisms...
  3. ncbi Increased response-time variability is associated with reduced inferior parietal activation during episodic recognition in aging
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    J Cogn Neurosci 20:779-86. 2008
    ..In support of extant findings and theory from neuroscience, neuropsychology, and cognitive aging, the present results suggest that behavioral IIV represents a proxy for neural integrity...
  4. ncbi Intra-individual variability in behavior: links to brain structure, neurotransmission and neuronal activity
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Gavlegatan 16, S 113 30 Stockholm, Sweden
    Trends Neurosci 29:474-80. 2006
    ....
  5. ncbi Dopamine D(1) receptors and age differences in brain activation during working memory
    Lars Backman
    Aging Research Center, Karolinska Institutet, Gavlegatan 16, SE 113 30 Stockholm, Sweden
    Neurobiol Aging 32:1849-56. 2011
    ..These findings suggest that age-related alterations in dopaminergic neurotransmission may contribute to underrecruitment of task-relevant brain regions during working-memory performance in old age...
  6. ncbi Accelerated postmenopausal cognitive decline is restricted to women with normal BMI: longitudinal evidence from the Betula project
    Petra P Thilers
    Aging Research Center, NVS, Karolinska Institutet and Stockholm University, Stockholm, Sweden
    Psychoneuroendocrinology 35:516-24. 2010
    ..The results support the notion that the diminished postmenopausal production of endogenous estrogen may have a slight negative influence on cognitive abilities, but mainly for women within a normal BMI range...
  7. ncbi Simulating neurocognitive aging: effects of a dopaminergic antagonist on brain activity during working memory
    Hakan Fischer
    Aging Research Center, Karolinska Institute, Stockholm, Sweden
    Biol Psychiatry 67:575-80. 2010
    ..Previous correlational studies have indirectly linked dysfunctional dopaminergic neurotransmission to age-related cognitive deficits and associated reductions in task-induced functional brain activity...
  8. ncbi Trajectories of cognitive decline following dementia onset: what accounts for variation in progression?
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    Dement Geriatr Cogn Disord 31:202-9. 2011
    ..We examined whether trajectories of cognitive change differed reliably after diagnosis, and whether diverse predictors of such differences (demographic, psychological, biological, genetic, social) could be identified...
  9. ncbi Preclinical cognitive trajectories differ for Alzheimer's disease and vascular dementia
    Erika J Laukka
    Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden
    J Int Neuropsychol Soc 18:191-9. 2012
    ..The results have important implications for identifying the two dementia disorders at an early stage and for selecting cognitive tasks to evaluate treatment effects for persons at risk of developing AD and VaD...
  10. ncbi Predicting impending death: inconsistency in speed is a selective and early marker
    Stuart W S MacDonald
    Aging Research Center, Karolinska Institutet, Stockholm, Sweden
    Psychol Aging 23:595-607. 2008
    ..Hierarchical prediction patterns support the view that inconsistency in speed is an early behavioral marker of neurological dysfunction associated with impending death...
  11. ncbi Sex differences in cognition: the role of handedness
    Petra P Thilers
    Karolinska Institutet, NVS, Aging Research Center, Gavlegatan 16, 8tr, S 113 30 Stockholm, Sweden
    Physiol Behav 92:105-9. 2007
    ....
  12. ncbi Terminal-decline effects for select cognitive tasks after controlling for preclinical dementia
    Erika J Laukka
    Aging Research Center, Karolinska Institutet and Stockholm Gerontology Research Center, Stockholm, Sweden
    Am J Geriatr Psychiatry 16:355-65. 2008
    ..However, specific cognitive tasks might be more sensitive to terminal-decline effects. The purpose of this study was to explore possible terminal-decline effects for a range of cognitive tasks after controlling for preclinical dementia...
  13. ncbi Impact of negative emotion on the neural correlates of long-term recognition in younger and older adults
    Grégoria Kalpouzos
    Aging Research Center, Karolinska Institute and Stockholm University Stockholm, Sweden
    Front Integr Neurosci 6:74. 2012
    ....
  14. ncbi How do health and biological age influence chronological age and sex differences in cognitive aging: moderating, mediating, or both?
    Ake Wahlin
    Karolinska Institutet, Stockholm Gerontology Research Center, and Department of Psychology, Stockholm University, Stockholm, Sweden
    Psychol Aging 21:318-32. 2006
    ..Overall, both health and BioAge predicted cognitive variation independently of chronological age...
  15. ncbi The association between endogenous free testosterone and cognitive performance: a population-based study in 35 to 90 year-old men and women
    Petra P Thilers
    Aging Research Center, Division of Geriatric Epidemiology, Neurotec, Karolinska Institute, Stockholm, Sweden
    Psychoneuroendocrinology 31:565-76. 2006
    ..These results support the claim that FT exerts sex-specific influences on cognitive performance...
  16. ncbi Intraindividual variability in cognitive performance in three groups of older adults: cross-domain links to physical status and self-perceived affect and beliefs
    Esther Strauss
    Department of Psychology, University of Victoria, British Columbia, Canada
    J Int Neuropsychol Soc 8:893-906. 2002
    ..Considered together, the result indicated that measures of cognitive as well as physical variability are important behavioral markers of neurological integrity...
  17. ncbi Self-awareness after traumatic brain injury: a comparison of measures and their relationship to executive functions
    Nicholas M Bogod
    Department of Psychology, University of Victoria, Victoria, British Columbia, Canada
    J Int Neuropsychol Soc 9:450-8. 2003
    ..Results indicated significant, albeit marginal relationships between the two measures, and better correlation of the SADI with measures of frontal lobe functioning. The SADI also predicted injury severity...
  18. ncbi Age-related slowing of digit symbol substitution revisited: what do longitudinal age changes reflect?
    Stuart W S MacDonald
    Department of Psychology, University of Victoria, British Columbia, Canada
    J Gerontol B Psychol Sci Soc Sci 58:P187-94. 2003
    ..These discrepancies suggest different sources of variance may underlie cross-sectional age differences and longitudinal age changes for DSS...
  19. ncbi Performance variability is related to change in cognition: evidence from the Victoria Longitudinal Study
    Stuart W S MacDonald
    Department of Psychology, University of Victoria, British Columbia, Canada
    Psychol Aging 18:510-23. 2003
    ..These findings support the view that performance variability serves as a marker of cognitive aging...
  20. ncbi Biological age and 12-year cognitive change in older adults: findings from the Victoria Longitudinal Study
    Stuart W S MacDonald
    Department of Psychology, University of Victoria, Victoria, B C, Canada
    Gerontology 50:64-81. 2004
    ..Although recent cross-sectional findings indicate that markers of biological age (BA) mediate chronological age (CA) differences in cognitive performance, little is known about their influence on actual cognitive changes...
  21. ncbi Inconsistency in serial choice decision and motor reaction times dissociate in younger and older adults
    David Bunce
    Department of Psychology, Goldsmiths College, University of London, London, United Kingdom
    Brain Cogn 56:320-7. 2004
    ..The results are consistent with accounts suggesting that inconsistency in neurobiological mechanisms increases with age, and that attentional lapses or fluctuations in executive control contribute to RT inconsistency...
  22. ncbi Cognitive performance differentiates selected aspects of psychosocial maturity in adolescence
    Nancy L Galambos
    Department of Psychology, University of Alberta, Edmonton, Canada
    Dev Neuropsychol 28:473-92. 2005
    ..The results suggest that cognitive abilities are related to psychosocial maturity...
  23. ncbi Short-term changes in general and memory-specific control beliefs and their relationship to cognition in younger and older adults
    Allison A M Bielak
    Department of Psychology, University of Victoria, BC V8W 3P5, Canada
    Int J Aging Hum Dev 65:53-71. 2007
    ..The results suggest the importance of assessing short-term as well as long-term changes in perceived control to obtain a complete picture of aging-related changes...
  24. ncbi Neurocognitive markers of cognitive impairment: exploring the roles of speed and inconsistency
    Roger A Dixon
    Department of Psychology, University of Alberta, Edmonton, Alberta, Canada
    Neuropsychology 21:381-99. 2007
    ..Neurocognitive markers of speed and inconsistency may be leading indicators of emerging cognitive impairment...
  25. ncbi Variability in reaction time performance of younger and older adults
    David F Hultsch
    Department of Psychology, University of Victoria, British Columbia, Canada
    J Gerontol B Psychol Sci Soc Sci 57:P101-15. 2002
    ..The results indicate that variability of performance is an important indicator of cognitive functioning and aging...
  26. ncbi Latent change models of adult cognition: are changes in processing speed and working memory associated with changes in episodic memory?
    Christopher Hertzog
    School of Psychology, Georgia Institute of Technology, 654 Cherry Street, Atlanta, Georgia 30332 0170, USA
    Psychol Aging 18:755-69. 2003
    ..Dissociations were detected between cross-sectional ability correlations and longitudinal changes. Shuffling the tasks used to define the Working Memory latent variable altered patterns of change correlations...