PSYCO403 Lecture Notes - Lecture 6: Fluid And Crystallized Intelligence, Cognitive Reserve, Dementia
22 Mar 2020
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Document Summary
Highest possible level of cognitive function in each cognitive domain given biological and genetic disposition. Fluctuations in behavior over short periods of time. Ex. poor performance once day, good performance the next. Actual change over time that isn"t a fluctuation. Multidirectional (decline or growth), plasticity, development of gains and losses, contextualism. Variations in performance can be the result of interactions between environments and endogenous factors. Short-term increases performance, long-term negative effects (risk factor for ad) Increased biomarkers, plaque deposition, neuronal injury and dysfunctions, atrophy, memory decline. There is an order of events that lead to decline. Amyloid, tau and brain structure changes are all present while still cognitively normal. Some people can tolerate more age-related brain changes or ad related pathology and still maintain function. Brain can tolerate more pathology before symptoms appear. Individual differences in how tasks are performed that may allow some to be more resilient. Increase reserve by aerobic exercise, cognitive interventions, mentally stimulating activities.
