Psych Aging 1

What is the central idea of the lecture's approach to aging?

Aging is variable and multidimensional, with different biological, cognitive, psychological, and social outcomes following different trajectories.

Why is chronological age alone a poor indicator of how a person is aging?

People of the same chronological age can differ substantially in biological age, psychological age, health, and abilities.

What does "the future is older" mean?

The proportion of the population made up of older adults is increasing substantially.

What misconception about loneliness does the lecture challenge?

The belief that most older adults are lonely; the presented data show loneliness is highest among young adults and declines across older age groups.

What pattern does the lecture present for life satisfaction across adulthood?

Life satisfaction follows a U-shaped pattern, reaching its lowest point around age 47 and increasing again during older adulthood.

What did Blanchflower (2021) find about life satisfaction?

Across 145 countries, life satisfaction followed a U-shaped pattern with the lowest point occurring around midlife.

What misconception about older drivers does the lecture challenge?

The claim that older drivers are the most dangerous drivers; the presented data show teenagers have the highest fatal-crash involvement per 100 million miles.

Why is the claim that memory ability declines uniformly with age inaccurate?

Different cognitive abilities have different trajectories; vocabulary and semantic memory can continue growing into the 60s and 70s while processing speed declines.

A 75-year-old has slower processing speed but stronger vocabulary than they had decades earlier. What does this demonstrate?

Cognitive aging is not uniform because different abilities can decline or remain strong and improve at different rates.

What happens to simple reaction time across adulthood?

Simple reaction time peaks around age 24 and then slows steadily with age.

What is the approximate average age-related change in simple reaction time presented in the lecture?

Simple reaction time slows by about 2 milliseconds per year on average.

What misconception about nursing homes does the lecture challenge?

The belief that most older adults end up living in nursing homes.

What proportion of Americans age 65+ live in nursing homes according to the lecture?

About 4%, meaning most older adults live in their own homes or with family.

What does aging in place mean?

Continuing to live in one's own home or with family rather than living in a nursing home.

How does depression among older adults compare with depression among young adults in the lecture?

Healthy older adults have lower rates of depression than young adults, although depression can increase sharply with poor health or bereavement.

What qualification does the lecture give about depression in older adults?

Depression may be underdiagnosed in older adults, and rates can rise sharply with poor health or bereavement.

What age-related trend does the lecture identify for religion and spirituality?

Religious or spiritual practices increase modestly with age, although some of the pattern may reflect cohort effects.

What misconception about sexual activity in later life does the lecture challenge?

The belief that sexual activity disappears in old age.

What factors matter more than age itself for sexual activity among older adults according to the lecture?

Partner availability is particularly important; partnered older adults can have sexual activity frequencies similar to middle-aged couples.

What did Lindau et al. (2007) demonstrate about sexual activity in older adults?

More than half of adults ages 65-74 and about a quarter of those ages 75-85 reported being sexually active.

What does the lecture suggest about positive beliefs concerning aging?

Positive age beliefs are associated with substantially longer longevity.

What did Levy et al. (2002) find about age beliefs and longevity?

Positive age beliefs were associated with about 7.5 additional years of life on average in the Ohio Longitudinal Study.

Why is the age-beliefs finding important for understanding aging?

It suggests that beliefs and self-perceptions about aging can be related to long-term health and longevity outcomes.

What does the statement "you are aging right now" emphasize?

Aging begins throughout the lifespan; sensory systems have already begun changing, while different cognitive abilities peak at different points in life.

What sensory change does the lecture specifically use as an example of aging that has already begun?

Loss of sensitivity to very high-frequency sounds.

Why does the lecture emphasize that aging is variable?

Different people and different abilities can age at different rates, so chronological age does not determine one uniform pattern of change.

What are the three types of age discussed in the lecture?

Chronological age, biological age, and psychological age.

What is chronological age?

The amount of time that has passed since a person's birth.

Why does chronological age tell us relatively little about health?

People with the same chronological age can differ substantially in biological functioning and health.

What is biological age?

A measure of wear and functioning across cells, organs, and physiological systems.

Why can biological age be a better predictor of disease than chronological age?

It reflects differences in physiological functioning and factors such as sleep, exercise, and stress.

What is one limitation of biological age?

Different biological systems can have different aging clocks, and measuring biological age requires laboratory assessment.

What is psychological age?

A person's subjective experience of how old they feel or perceive themselves to be.

Why is psychological age different from chronological age?

Psychological age reflects subjective self-perception, which can change and can be influenced by mood and culture.

What important distinction should you make when comparing the three types of age?

Chronological age measures time since birth, biological age reflects physiological functioning, and psychological age reflects subjective experience.

A 70-year-old has a biological age of 58 and a psychological age of 50. What does this illustrate?

A person's chronological, biological, and psychological ages can differ substantially from one another.

Why can two people with the same chronological age have different biological ages?

Their physiological functioning and accumulated effects of factors such as sleep, exercise, and stress can differ.

What does the Gompertz curve describe?

The increase in the annual probability of death across adulthood.

What happens to mortality risk during the adult Gompertz zone?

Mortality risk increases exponentially with age.

According to the lecture's summary of the Gompertz curve, approximately how often does mortality risk double?

Approximately every 8 years.

What is the conditional life expectancy paradox?

The longer a person survives, the older their expected age at death becomes.

Why does surviving to an older age increase remaining life expectancy?

A person who has already survived to that age has passed through earlier mortality risks, changing the expected age at death for the remaining population.

A person reaches age 90 after having survived all earlier mortality risks. How does the lecture's conditional life expectancy concept apply?

Their expected age at death is higher than the life expectancy calculated at birth because they have already survived to age 90.

What does the "centenarian explosion" refer to?

The dramatic growth in the number of people living to age 100 and beyond.

What trend in the U.S. centenarian population does the lecture present?

The number increased from roughly 3,000 in 1900 to about 108,000 in 2025 and is projected to reach about 422,000 by 2050.

What does the lecture's conditional probability data show about reaching age 100?

The probability of reaching 100 increases when calculated conditional on having already survived to an older current age.

What sex difference in longevity does the lecture present for the U.S.?

Female life expectancy is about 5.3 years longer than male life expectancy in the presented data.

What happens to the sex ratio among people who reach age 100?

Women outnumber men by about 3 to 1.

What broad cross-species pattern does the lecture identify?

Females tend to outlive males across many species, including humans and several other mammals.

What are the six proposed explanations for why females tend to live longer than males?

Unguarded X chromosomes, lower testosterone toxicity, less risk-taking behavior, more social support, weaker sexual selection on females, and stronger immune function or estrogen-related protection.

Why should the proposed explanations for the female longevity gap be treated as multifactorial rather than as one definitive cause?

The lecture presents several interacting biological, behavioral, and evolutionary explanations, and the exact contribution of each remains contested.