# Life Cycle and Health

Psychology I · Society and Health · https://tryals.app/learn/psychology-i/life-cycle-and-health

## Health Across the Lifespan

Health challenges shift systematically across life. In **childhood**, beliefs and habits are established through family modeling, and these patterns often persist into adulthood.

**Adolescence** brings a spike in risk-taking due to a developmental mismatch: the brain's reward-seeking systems mature faster than its self-regulatory control systems, encouraging bold exploration.

| Life stage | Central health issue |
| --- | --- |
| Childhood | Behaviors and beliefs are established |
| Adolescence | Risk-taking spikes; regulation lags reward |
| Adulthood | Chronic disease first emerges |
| Older age | **Successful aging**: low disease, high function |

> **Common pitfall:** treating adolescent risk-taking as personal moral failure. The reward-control mismatch is a normal developmental pattern, not poor character.

## Adulthood and Aging

**Adulthood** is when chronic diseases (cardiovascular disease, diabetes, cancers) typically emerge, acting as the cumulative result of decades of prior behavior and exposure.

Rather than viewing late life purely as decline, John Rowe and Robert Kahn's **successful aging** model identifies three key components for aging well:

- **Low probability of disease and disability**
- **High cognitive and physical functioning**
- **Active engagement with life** (social and productive activity)

A recurring theme is that health behavior is cumulative. Habits at one stage shape later risk, which is why prevention must start early rather than waiting for disease.

## Practice questions

6 of this lesson's 13 practice questions, with answers. The full set is in the app.

### 1. Adolescent risk-taking is often explained as poor judgement. The dual-systems account says both brain systems are developing **normally**. What is actually going wrong?

A. Reward-seeking is abnormally strong in teenagers relative to adults
B. The self-regulatory system is damaged during adolescence and later repairs
C. Judgement is genuinely poorer, and improves only with accumulated experience
D. Nothing is faulty; the accelerator matures before the brakes

**Answer:** D. Nothing is faulty; the accelerator matures before the brakes

**Why:** It is a mismatch in timing, not a fault in a teenager: reward-seeking surges at puberty and regulatory control finishes maturing in the mid-twenties. That is also why the spike is temporary, and why insurers price a 19-year-old differently from a 26-year-old with the same record.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/adolescent-risk-taking-is-often-explained-as-poor-judgement-the

### 2. Select every statement that is TRUE about health across the lifespan.

A. Adolescent risk-taking reflects a reward-versus-control maturational mismatch.
B. Adolescent risk-taking is a personal failing unique to bad individuals.
C. Successful aging includes active engagement with life.
D. Chronic diseases usually first become apparent in early childhood.
E. Childhood health habits often persist into adulthood.

**Answer:** A. Adolescent risk-taking reflects a reward-versus-control maturational mismatch.; C. Successful aging includes active engagement with life.; E. Childhood health habits often persist into adulthood.

**Why:** Persisting childhood habits, the maturational mismatch, and engagement in successful aging are all true. Risk-taking is a normal developmental pattern (not a personal failing), and chronic diseases typically first emerge in adulthood - so those two are false.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/select-every-statement-that-is-true-about-health-across-the-lifespan

### 3. Rowe and Kahn define successful aging as low disease risk, high functioning, and active engagement with life. A critic objects that this turns a woman's arthritis into a personal failure. Why does the objection have real force, and what does it not establish?

A. It has force: successful ageing cannot be studied at all.
B. It has force because the three criteria are only partly controllable.
C. It has force: disease risk has nothing to do with ageing.
D. It has no force: the model only describes outcomes.

**Answer:** B. It has force because the three criteria are only partly controllable.

**Why:** The objection lands on the label, not the list. Whether you develop arthritis is substantially luck, so calling the composite *success* quietly converts bad fortune into a shortfall. What survives is the measurement: disease burden, functioning and engagement remain the right things to track. Stop calling it success; keep counting it.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/rowe-and-kahn-define-successful-aging-as-low-disease-risk-high

### 4. Health psychologists put unusual weight on **childhood** habits. Given that most chronic disease appears decades later, why concentrate there?

A. Because children are easier to reach through schools than adults are through clinics
B. Because habits laid down before they are chosen tend to persist
C. Because childhood is when the body is most biologically vulnerable to disease
D. Because chronic disease actually begins in childhood and is simply undetected

**Answer:** B. Because habits laid down before they are chosen tend to persist

**Why:** A habit absorbed from the household before anyone weighed it is unusually durable, and it goes on to set decades of exposure. Prevention works upstream because the same effort buys forty years there and a few years at the clinic door.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/health-psychologists-put-unusual-weight-on-childhood-habits-given

### 5. The mismatch between an early-maturing reward system and a later-maturing control system is a normal developmental pattern, not a defect unique to badly behaved teenagers.

**Answer:** True

**Why:** True. The maturational mismatch appears across populations as a normal feature of brain development, which is why adolescent risk-taking is a developmental phenomenon rather than a character flaw in particular individuals.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/the-mismatch-between-an-early-maturing-reward-system-and-a

### 6. Order the lifespan chain showing why health psychologists emphasize early prevention.

**Answer:**

1. Health habits and beliefs are established in childhood through family modeling.
2. Adolescence adds new exposures as risk-taking spikes.
3. Decades of accumulated behavior and exposure build up through adulthood.
4. Chronic disease emerges in adulthood as the cumulative result.
5. Health in older age reflects a lifetime of accumulated exposure.

**Why:** Habits form in childhood, adolescence adds exposures, decades of accumulation follow, chronic disease emerges in adulthood, and older-age health reflects the whole accumulated history. Because health behavior is cumulative, prevention pays most when it starts early.

Page: https://tryals.app/practice/psychology-i/life-cycle-and-health/order-the-lifespan-chain-showing-why-health-psychologists-emphasize