Unit 5 Flashcards
What age does early adulthood include?
18 to 40 years
-> difficult to divide into discrete periods because the timing of important milestones varies greatly among individuals
What are some common set of tasks showing early adulthood?
leaving home, completing education, beginning full-time work, attaining economic independence, establishing a long-term sexually and emotionally intimate relationship, and starting a family
When does biological aging begin?
Once body structures reach maximum capacity and efficiency in the teens and twenties
-> genetically influenced
-> universal in all members
e.g.: grey hair, wrinkles, etc.
What is biological aging also called?
senescence
What are the changes in physical appearance during the twenties and thirties?
so gradual that most are hardly noticeable
-> later they will accelerate
How do the senses start changing and at what age?
- vision (from 30): ability to focus on close objects declines, visual acuity drops between 70 and 80
- hearing (from 30): sensitivity to sound declines, especially at high frequencies -> more than twice as rapid for men as for women
- taste (from 60): sensitivity to the four basic tastes is reduced
- smell (from 60): loss of smell receptors reduces ability to detect and identify odors
- respiratory (gradually): decreases, breathing rate increases
- cardiovascular (gradually): heart muscle becomes more rigid, maximum heart rate decreases
What is one of the most serious cardiovascular diseases?
atherosclerosis: heavy deposits of plaque containing cholesterol and fats collect on the walls of the main arteries.
-> begins early in life, progresses during middle adulthood
How do motor performances (athletic skills) change during age?
they peak between 20-35, then gradually decline
-> speed, strength, gross-motor coordination peak in early twenties
-> endurance, arm-hand steadiness and aiming peak in late twenties and early thirties
what is largely responsible for age-related declines in motor performance?
inactivity rather than biological aging
How does the physical development change and at what time? (muscular, immune, skeletal, reproductivity and nervous system)
- muscular (gradual): fast-twitch muscle fibers decline in number and size to a greater extent than slow-twitch fibers, tendons stiffen
- immune (gradual): immune system declines after age of 20, shrinking of the thymus limits maturation of T cells
- skeletal (begins in late thirties, accelerates in 50s, slows in the 70s): cartilage in the joints thins and racks -> bone ends to erode
- reproductive (in women after 35, in men after 40): fertility problems and risk of having disabled baby
- nervous system (from 50): brain weight declines as neurones lose water content
How did the birth rate change over the years regarding age?
- decreased for women 20 to 24 years of age whereas it increased for women 25 years of age and older
- women in the 30s: birth rate increased sixfold and for early forties it doubled
why do many people get children now later in life?
delaying childbearing until their education is complete
does reproductive capacity decline with age? why?
yes
women: due to reduced quality and quantity of ova
men: semen and sperm motility decreases gradually after 35
How do attributes of the body change over time and when? (skin, hair, height, weight)
- skin (gradual): epidermis is held less tightly to the dermis, skin becomes looser and wrinkly
- hair (from 35): grays and thins
- height (from 50): loss of bone strength -> height loss 5cm by 70s and 80s
- weight (increase to age 50, declines from age 60): rise in fat and decline in muscle and bone mineral
how does stress influence physical responses?
stress induces physical responses
-> contribute to cardiovascular disease, several types of cancer and gastrointestinal problems
Who reports depressive symptoms more often?
young adults
What are changes in the structure of thought?
development of cerebral cortex in early adulthood results in continued fine-tuning of the prefrontal cognitive-control network
-> achieves better balance with the brains emotional/social network
-> improvements in planning, reasoning and decision making
What is cognitive development known as beyond Piagets formal operations?
postformal thought
What increases rational, flexible and practical ways of thinking in early adulthood?
personal effort and social experiences combined
What theories are Perry’s theory of epistemic cognition and Labouvie-Vief’s theory of pragmatic thought and cognitive-affective complexity?
they are influential theories of how thinking is restructured in adulthood
What is Perrys theory of epistemic cognition about?
our reflections on how we arrived at facts, beliefs and ideas
What is dualistic thinking, relativistic thinking and commitment within relativistic thinking according to Perry?
Dualistic thinking: dividing information into right and wrong.
Relativistic thinking: awareness of multiple truths, each relative to its context
Commitment within relativistic thinking: instead of choosing between opposing views, they try to formulate a more personally satisfying perspective
What does Labouvie-Vief’s theory state?
from adolescence through middle adulthood, people gained in cognitive-affective complexity
-> need to specialize motivated adults to move from hypothetical to pragmatic thought