PSY210: Late Adulthood Flashcards
Functional Age
Actual competence and performance
May not match chronological age
discrepancy is confounding
variability in functioning
functional age - age based on what they can do
65-75 can have dramatically diff experiences based on progression because of functional age
Age Distribution
recent - late 60-80s
pop is growing older - largest section is going to be in late adulthood
baby boomers - boom in pop marching through time
vote the most - tax dollars directed to them
Average Healthy Life Expectancy at Birth
avg healthy life expectancy: how long can i expect to live a healthy life
US + Portugal - 68,69 Canada - 72 Japan - 75
Life Expectancy
Increasing in the North America
• lower infant mortality
• lower adult deaths
avg includes infant mortality
avg for entire pop
substantially increased, 1950s - 50 years, now 74 years
NA - fewer children dying young, less accidents
Life Expectancy
Variations due to heredity, environment
• women live longer
• SES
• ethnicity
• nationality
women live longer - work, disposition to longer life
high SES: live longer, knowledge + access to resources
minority groups tend to be lower SES, genetic predisposition
Life Expectancy in Developed Nations
Japan ranks first.
• low rates of obesity, heart disease
• favourable health-care policies
Japan has a good health care system, better diet
Life Expectancy in Developed Nations
North America lags due to health care and lifestyles.
• but elderly are fastest-growing group
US - lack of access to health care, maybe will get better
Developing nations: age 50
born here - predict to live 24 years longer
where you are born changes your life plan - impact on culture
Life expectancy cross over
in NA around 85, crossover effect - low SES become healthier after 85
high SES can live a bad life and get medical interventions
Maximum Lifespan
Average is age 85.
• varies between age 70 to 110
• centenarians increasing in industrialized world
• more female centenarians
Japan has higher # of centenarians
cognitive capacity drops at around the age of 25
neurons don’t fire as fast
Some scientists believe upper limit not yet reached
Question: Should lifespan be extended?
• quality of life is goal
Aging and the Nervous System
Loss of brain weight accelerates after age 60.
Neurons lost in frontal lobes, corpus callosum, cerebellum (balance), glial cells
Autonomic nervous system less efficient
5-10% loss of brain weight
ventricles get bigger - empty space
ANS - regulation is less effective
Aging and the Nervous System
Brain can compensate
• new fibers, neurons
• new connections
• use more parts of brain
neuroplasticity continues in late adulthood
dies off at greater rate than neurogenesis
more diverse activation to compensate
Sensory Impairments and Aging: Vision
Lower visual acuity
Poor dark adaptation, sensitivity to glare
need prescription
diff seeing at night due to eye muscles becoming stiffer
sunglasses in evening to avoid glare
Sensory Impairments and Aging: Vision
Decreased colour, depth perception Cataracts Macular degeneration Senior Lifestyles cataracs - blurry macular degeneration - fuzziness in centre - retina damage
Effects of Sensory Changes: Vision problems
! Changes in leisure activities ! Loss of self-confidence ! Possible problems in daily activities diff reading small print - cards, book social consequences not wanting to admit diff in daily activities
Effects of Sensory Changes: Hearing loss
! Social isolation
! Lower self-efficacy
! Lower safety and enjoyment
lose high pitch + low pitch sound, noisy environments
decrease WM + processing speed - hard to keep up with conversations
more social isolation even if you are accomodating for their hearing
lower self-efficacy - more cautious
Effects of Sensory Changes: Decreased taste and smell
Nutritional, safety risks
smell reduced + less saliva, medication dries out mouth
nutritional deficits - wants food they can taste - high sodium
forget when they bought the food
Effects of Sensory Changes: Less sensitive to touch
Difficulties with leisure, daily activities
less tactile perception - arthritis, can’t play cards, cutting finger
Stereotypes of Aging: Many assume deterioration is inevitable.
elders experience prejudice, discrimination
! assumptions affected by culture
as long as we stay physically active - only 10% in performance
research contributes to stereotypes of aging
Stereotypes of Aging: Many assume deterioration is inevitable.
assumes that they can’t do simple tasks
retake driving tests - assumes everyone drops in performance
in first nations - more wisdom + increased capacity with age
Stereotypes of Aging: Stereotype threat
fear of confirming stereotype reduces functioning
use less strategies because they believe it won’t matter
expected it to be worse, but experience is proving them wrong
Stereotypes of Aging: May be changing
positive media portrayals
! source of pride in some cultures
expected it to be worse, but experience is proving them wrong
Mental Disabilities in Late Adulthood
Dementia – thought and behaviour impairments that disrupt everyday life
Cerebrovascular dementia • strokes
bloodclot - neurons die off - more common in M
sudden onset, multiple sequential strokes
more likely to have another
Mental Disabilities in Late Adulthood
Misdiagnosis, reversible dementia • depression
• medication side effects
depressed - isolated, loss of partner, similar symptoms to dementia
heart medication can cause loss in cognitive functioning
Alzheimer’s Disease
Incidence
Higher with age – about 45% over age 85
Symptoms Forgetting>disorientation>personality change>depression>motor problems>delusions> speech problems>infections
irritable, loss of inhibition, depression - recognize it, diff understanding ppl
Alzheimer’s Disease
Brain changes Neurofibrillary tangles, amyloid plaques in cerebral cortex, synapse deterioration
buildup of protein: tangles - excess tao = neural death
plaque outside of neuron - excess amyloid
Alzheimer’s Disease
Risk factors ! Genetic predispositions ! High-fat diet
! Lifestyle factors
chromosome 21
not well understood, only for certain groups
Alzheimer’s Disease
Protective factors Education, active lifestyle ! Mediterranean diet
! Active social life
poor exercise, low activity, keeps up thinking by interacting with ppl
Incidence of Dementia, by Age, Caused by Alzheimer’s Disease or Strokes, Canada 1991-1992
lifestyle and genetic contributing to gender diff
shouldn’t be something we overly worry about
Cognitive Change in Late Adulthood: Memory
Deliberate
Recall more difficult
context helps retrieval, but slower processing, smaller working memory make context harder to encode
deliberate - memory that takes effort - unpracticed
decline in deliberate memory
Cognitive Change in Late Adulthood: Memory
Automatic
Recognition easier than recall
! more environmental support
maintain performance of auto/implicit memory
Implicit memory better than deliberate memory
! without conscious awareness
! depends on familiarity
Cognitive Change in Late Adulthood: Memory
lower processing speed, decrease in WM, slower recall
not spontaneously using strategies
Associative Memory Declines in Late Adulthood
Difficulty in creating or retrieving links between pieces of information
“Using memory cues, enhancing meaningfulness of information, can help
binding of 2 bits of info - more decline than typical memory
Associative Memory Declines in Late Adulthood
test diff in item-pair memory test - dramatic drop in late adulthood
hard to hold info in WM + bind them + create representations
don’t try to bind info, but if they use strategies, it increases performance
Remote Memory
! Very long-term recall
! Autobiographical memory
testing their knowledge for random LTM info - perform worse
autobio memory bump - report few memory betw 30 + 50, but 15-25
most recently is remembered better, but lives are more of the same
misbelieve that they have better memory for younger years
Prospective Memory
Remembering to engage in planned actions ! Event-based easier than time- based ! Use reminders, repetition to help prospective - declines in planning event-based do not decline - cues time based - requires cognitive effort