Final Exam- Chapter 15 Flashcards
What is Optimal Aging? Healtht aging…
Healthy aging can be defined as absence of disease &
good physical function, intact cognition, and an active engagement with life
Optimal Aging- Losses are often balanced by gains
- Positive psychological characteristics include happiness
intellectual curiosity, gratitude, deep spirituality, & a strong sense of community - A certain level of detachment & wisdom may be necessary to learn to accept whatever level of illness & disability one has, thereby preserving mental health, & as much social functioning as possible within the confines of disability.
Life Span
the maximum number of years an individual can live;
has remained between 120–125 years
Life Expectancy
- the number of years that the average person born in a particular year will probably live
- Has increased an average of 30 years since 1900
- Average life expectancy today is 78.1 years
- -Overall female: 80.7
- -Overall male: 75.4
Longer life span
– Decrease in infant mortality & infectious diseases
– Better health practices (sanitation, drinking water, nutrition & food safety, better heath behavior habits)
– Decline in heart disease & deaths due to cardiovascular
disease (such as stroke); though cancer deaths have
remained relatively stable
Leading causes of death
– Smoking, poor diet & physical activity, & alcohol consumption—not pathogens
– Obesity is 4th leading cause
Cellular Clock Theory
Cells can divide a max of 75-80 times; this places the max human life span at 120–125 years of age
-Telomeres become shorter each time a cell divides
Free-Radical Theory
people age because when cells metabolize energy, the by-products include unstable oxygen molecules, or free radicals
-Free radicals damage DNA & other cellular structures
Mitochondrial Theory
aging is due to the decay of mitochondria
-Mitochondria: tiny bodies within cells that supply essential energy for function, growth, and repair
Hormonal Stress Theory
aging in the body’s hormonal system can lower resistance to stress and increase the likelihood of disease
-Prolonged, elevated levels of stress hormones are associated with increased risks for many diseases
Vision
- Decline in vision becomes more pronounced
- Adaptation to dark and driving at night becomes especially difficult
- Decline may be the result of a reduction in the quality or intensity of light reaching the retina
- Color vision may decline as a result of the yellowing of the lens of the eye; affects green/blue/ violet spectrum
- Depth perception declines in late adulthood
- Decrease in contrast sensitivity
Hearing
- Hearing impairments are typical in late adulthood
- 15% of the population over age 65 is legally deaf
- Usually due to degeneration of the cochlea
- Some (but not all) hearing problems can be corrected by hearing aids
Smell and Taste
- Smell and taste losses typically begin about age 60
- Less decline in healthy older adults
- Often leads to a desire for more seasoned foods
Touch and Pain
- Slight decline in touch sensitivity with age
2. Older adults are less sensitive to pain
Research focus on motor control & aging has been captured in 3 distinct areas of study
- Physical fitness aspects such as strength, flexibility, & endurance
- The information processing activities that relate variables such as reaction time and movements time as factors that reduced motor performance with aging
- The neurophysiological control of posture, locomotion, & fine motor control
Motor complex behavior
- A central hypothesis holds that as individuals age, they are less capable of producing complex behavior
– May be due to a reduction of individual structural components or a restriction of the coupling of these components - There is a strong relationship between the complexity of movement output & skill level of performance as a function of task
- Postural control is another element affecting complexity of movement & tends to decline with age
- Skill also influences output & complexity of movement & can serve as a buffer for motor decline
Sexuality
- Orgasm becomes less frequent in males with age
- Many older adults are sexually active as long as they are healthy (Lindau & colleagues, 2007)
- Older adults who do not have a partner are far less likely to be sexually active than those who have a partner
- For women ages 70+, approx 70% do not have a partner compared to 35% of men - Various therapies have been effective for older adults who report sexual difficulties
- Sex education
Substance Abuse
- Medications can increase the risks associated with consuming alcohol or other drugs
- Can lead to breathing impairment, excessive sedation, or fatal O/D
- Majority of U.S. adults 65 and older (58%) completely abstain from alcohol (Nat’l Center for Health Stats, 2006)
- Substance abuse among older adults may be an “invisible epidemic” (SAMHSA, 2002)
- Late-Onset Alcoholism: onset of alcoholism after the age of 65
- Often related to loneliness, loss of a spouse, or a disabling condition
- Moderate drinking of red wine is linked to better health and increased longevity (lowering stress & reducing coronary h.d.)
Exercise
Active adults are healthier and happier: cardio & weights combined is best
Benefits of Exercise
- Linked to increased longevity
- Related to prevention of common chronic diseases
- Associated with improvement in the treatment of many diseases
- Can optimize body composition and reduce the decline in motor skills as aging occurs
- Reduces the likelihood that older adults will develop mental health problems
- Linked to improved brain and cognitive functioning
Nutrition & Weight
- Some older adults restrict their dietary intake in a way that may be harmful to their health
- Decreased snacking between meals may contribute to harmful weight loss
- Calorie restriction has been proven to extend the life span of certain animals, but it is not known if this works in humans
- Antioxidants (Vits. C, E, & beta-carotene) may help slow the aging process & possibly prevent some diseases
Health Treatment
- Patient’s feelings of control & self-determination are
important for health & survival in nursing homes (Rodin & Langer, 1977)
-Coping skills may reduce stress-related hormones, improving overall health
-Assertiveness training and time-management skills
-Cortisol levels were lower for individuals who received assertiveness training
Cognitive mechanics
- The “hardware” of the mind; components:
- Speed and accuracy of processes involved in sensory input, attention, visual and motor memory, discrimination, comparison, and categorization - Tends to decline with age
- Strongly influenced by biology and heredity
Cognitive pragmatics
- culture-based “software” programs of the mind
- Reading, writing, and educational qualifications
- Professional skills and language comprehension
- Knowledge of self and life skills - May improve with age
- Strong cultural influences
Speed of Processing
- Speed of processing information declines in late adulthood
- Considerable individual variation
- Accumulated knowledge may compensate to some degree
- Often due to a decline in brain and CNS functioning - Salthouse proposed that slowing of basic information processing might have insidious consequences for higher order cognition
Selective attention
- Focusing on a specific aspect of experience that is relevant while ignoring others that are irrelevant
- Older adults are generally less adept at this
Divided attention
- concentrating on more than one activity at the same time
- When tasks are easy, age differences are minimal
- The more difficult the tasks, the less effectively older adults divide attention
Sustained attention
- Readiness to detect and respond to small changes occurring at random times in the environment
- Older adults perform just as well on simple tasks; but performance drops on complex tasks
Cognitive control: 3 types
- Resistance to interference
-A breakdown of this function can lead to “mental clutter” in older adults’ working memory, thereby limiting its capacity & functioning - Coordination of distinct tasks
- Task switching
- Working memory “updating” has also been explored
Memory
Memory changes during aging, but not all memory
changes in the same way (ex: Spanish language study)
Park & colleagues (2002) found about memory
– Episodic memory, speed of processing, short-term
memory, and working memory all decline
– Measures of verbal knowledge remain stable
– Familiarity as well as implicit memory showed
relatively little or no age-related decline
Explicit memory
memory of facts & experiences that individuals consciously know & can state
Implicit memory
memory without conscious recollection; skills and routines that are automatically performed (ex/ driving a car)
-Implicit memory shows less aging declines than explicit memory
Episodic memory
- Problems with conscious or declarative retrieval of specific events located in time & place and/or retrieval of the context of experienced events
- May reflect weakly formed associations at encoding, or the age-sensitive consequences of attentional demands at encoding or retrieval
Source memory
- The ability to remember where one learned something
- Older adults show deficits in remembering source information; partly due to association failures between targets
- Makes older adults vulnerable to misleading info (especially when combined with poor working memory)
- Older adults can remember info about a source when it is important to them
Semantic memory
- does not decline as drastically as episodic memory
- Relatively stable aspect of memory dependent on the intactness of distributed representations
- Tip-of-the-tongue phenomenon
Working memory
- Small age differences in the performance of short duration memory tasks that do not require much concurrent or controlled processing
- Age-related deficits are larger for tasks such as reading span, listening span, or operation span
Prospective memory
- Refers to a person’s intentions for actions to be carried out in the future
- Less age sensitive than episodic memory—regardless of whether the task is time based or event based
- Older adults may use compensatory strategies
Problem Solving
-Problem solving & decision making both refer to goal-
directed cognition, in which an individual constructs plans &/or formulates behavioral responses aimed at resolving a discrepancy between initial state and a desired end state
Problem Solving Research
- The outcomes of problem solving & the effectiveness of solutions generated
- How individuals appraise or represent problems & their problem solving skills
Four theoretical ideas have guided research on adult everyday problem solving
- Contextualism
- Experientialism
- Componentialism
- Postformalism
Problem Solving Strategies
- On interpersonal & emotionally salient problems, older adults use both emotional coping strategies (e.g. managing their feelings) and problem-focused action (consistent with post-formal thinking)
- Older adults also tend to use more passive-dependent & avoidant-
withdrawal solutions with interpersonal dilemmas - Individuals perform poorly on problem solving for which they had the lowest self-efficacy, and avoidant-denial solutions occurred more frequently for problems that individuals had the least confidence in their ability
- Older adults are more passive in their coping (denial, suppressing emotion, accepting the situation)
Wisdom
- expert knowledge about the practical aspects of life that permits excellent judgment about important matters
- High levels of wisdom are rare
- Late adolescence to early adulthood is the main age window for wisdom to emerge
- Factors other than age are critical for wisdom to develop to a high level (e.g. some life experiences)
- Personality-related factors are better predictors of wisdom than cognitive factors
Use it or lose it- cognitive activity
- Changes in cognitive activity patterns can result in disuse and lead to atrophy of skills
- Certain mental activities can benefit the maintenance of cognitive skills
- Reading books, doing crossword puzzles, going to lectures and concerts - Research suggests that mental exercise may reduce cognitive decline and lower the likelihood of developing Alzheimer disease
Training Cognitive Skills
- Training can improve the cognitive skills of many older adults
- There is some loss in plasticity in late adulthood, especially in the oldest-old
- Improving the physical fitness of older adults can improve their cognitive functioning
- Improvements in planning, scheduling, working memory, resistance to distraction, and processing involving multiple tasks (Colcombe & Kramer, 2003)
Language Development
- Some decrements in language may appear in late adulthood
- Tip-of-the-tongue phenomenon
- Difficulty understanding speech due to hearing problems - Speech of older adults is typically lower in volume, slower, less precisely articulated, and less fluent
- Non-language factors may be responsible for some of the decline in language skills
- Slower information processing speed
- Decline in working memory
Dementia
any neurological disorder in which the primary symptoms involve a deterioration of mental functioning
-20% of individuals over the age of 80 have dementia
Alzheimer Disease
- a common form of dementia that is characterized by a gradual deterioration of memory, reasoning, language, and eventually, physical function
- Rates could triple within the next 50 years as people live longer
- Divided into early-onset (younger than 65) or late-onset (later than 65) - Alzheimer involves a deficiency in the brain messenger chemical acetylcholine
- Brain shrinks and deteriorates as memory ability decreases
- Formation of amyloid plaques and neurofibrillary tangles - Age is an important risk factor, and genes also play an important role
- Healthy lifestyle factors may lower the risk
- higher risk associated for those with history of cardiovascular disease
Mild Cognitive Impairment
- represents a transitional state between the cognitive changes of normal aging and very early Alzheimer disease and other dimentias
- Deficits in episodic memory appear to be an especially important early indication of risk
Multi-Infarct Dementia
- A sporadic and progressive loss of intellectual functioning caused by repeated temporary obstruction of blood flow in cerebral arteries—
- Results in a series of mini strokes
- More common among men with a history of high blood pressure
- Recovery is possible
Parkinson Disease
- A chronic, progressive disease characterized by muscle tremors, slowing of movement, and facial paralysis
- Triggered by the degeneration of dopamine-producing neurons in the brain
- Several treatments are available
Integrity vs. Despair
Involves reflecting on the past and either piecing together a positive review or concluding that one’s life has not been well spent
Life review
- Looking back at one’s life experiences, evaluating them, and interpreting/reinterpreting them
- Life review is set in motion by looking forward to death (Butler, 2007)
- Can include sociocultural dimensions, interpersonal/ relationship dimensions, and personal dimensions
- Each person’s life review is relatively unique
- Revision & expanded understanding takes place
Regrets involve four major themes (Timmer et al., 2005)
- Mistakes and bad decisions
- Hard times
- Social relationships
- Missed educational opportunities
Reminiscence therapy
- discussing past activities and experiences with another individual or group
- Photographs, familiar items, video/audio recordings; can help to improve mood.
Activity Theory
- The more active and involved older adults are, the more likely they are to be satisfied with their lives
- Suggests that individuals will achieve greater life satisfaction if they continue their middle-adulthood roles into late adulthood
Socioemotional Selectivity Theory (Laura Carstensen, 1998, 2006, 2008)
Older adults become more selective about their social networks, spending more time with individuals with whom they have had rewarding relationships
Two important classes of goals in Socioemotional Selectivity Theory
- Knowledge-related
- Emotional; more positive emotional experience & more likely to remember positive events; less reactivity too
- Depressive symptoms occur and mostly linked to declining health status
Trajectory for each type of goal is different
- When time is perceived as open-ended, knowledge-related goals are pursued more often, even at the cost of emotional satisfaction
- As older adults perceive that they have less time left, emotional goals become more important; more feel content especially when connected in positive ways to friends & family
Selective Optimization with Compensation Theory
Successful aging is linked with three main factors (Baltes)
- Selection
- Optimization
- Compensation