Lecture: Stress, Health & Coping
Lecture script · about 15–20 minutes spoken · Week 14
Opening
A nurse finishes a double shift. A small-business owner watches a slow month drag on. A grandson drives his grandmother to her third appointment of the week. A student stares at an exam schedule. Different lives, and the same quiet weight on each of them: stress.
That's this lecture. In Week 3, you met the sympathetic nervous system, the part that speeds up your heart when something startles you. In Week 10, you learned that an emotion includes a cognitive appraisal, your reading of what a moment means. And in Week 13, you saw how powerful situations can be. Now we put those pieces together to see how a worry in your head reaches your heart and your immune system. Next week, in the last unit of the course, stress returns as one part of how psychologists think about psychological disorders.
Here's the plan. First, what stress is and where it comes from. Then why the same event stresses two people differently. Then what your body does in the first seconds, and over months. Then how stress connects to health, how people cope, and what the evidence says helps. If you keep one sentence, keep this one: the event is the stressor; your appraisal shapes the stress.
1. Name the pressure: stress, stressors, and eustress
Think about the last week that felt heavy. Maybe a car repair, a new job, and a friend's move all landed at once. You can name the events. You can also name how they felt: tight shoulders, a short temper, bad sleep.
Psychologists keep those two things apart. Stress is the response of body and mind to an event a person appraises as threatening or challenging; what counts is how the event is perceived, not only the event itself. A stressor is the event or condition that sets off a stress response, such as an exam, a move, or a long commute. The exam is the stressor. The racing heart is the stress.
Stressors come in three sizes. A catastrophe is a large-scale, usually unpredictable event, such as a flood or an earthquake, that acts as a stressor for many people at once. A significant life change is a major personal transition, such as moving, starting a new job, or losing someone close, and it counts even when the change is welcome. A daily hassle is a small, everyday irritation, such as a slow line or a phone that won't charge. Hassles look tiny, but they pile up.
And not all stress feels the same. Picture a job interview you really wanted. Your palms sweat, but you also feel sharp. That's eustress, stress a person experiences as energizing and motivating. Now picture an interview you were pushed into, for a job you dread. That's distress, stress a person experiences as overwhelming or harmful. Hans Selye, who coined the term eustress, argued that some stress is part of a full life.
Pause and try this. A woman starts the nursing job she worked years to get. Is the new job a stressor, and which kind?
Think about size, and whether "wanted" changes anything.
Here's the answer. Yes, it's a significant life change, because welcome transitions still demand adjustment, and if it energizes her, it's eustress.
So all stress is not bad. What tends to harm health is distress that's intense or lasts a long time. And if stress ever feels like more than you can carry, you don't have to handle it alone: your campus counseling or health center, or a health professional you trust, is a good place to start.
2. Read the event: primary and secondary appraisal
Two students have the same exam at 9 a.m. on the same morning. The first feels a jolt of energy, makes flash cards, and texts her study group. The second lies awake at 2 a.m. with a racing heart. Same exam. Two very different nights.
What's different is what happens in each head. Richard Lazarus and Susan Folkman described it in 1984 as two judgments, one after the other. Primary appraisal is the first judgment a person makes about an event: whether it is a threat, a challenge, or nothing to worry about. Secondary appraisal is the second judgment: whether they have the resources, such as time, skills, or help, to cope with it. So primary appraisal asks, "Is this a threat?" Secondary appraisal asks, "Can I cope with it?"
Run the exam through both. The first student reads it as a challenge: "This is a chance to show what I know." Then: "I have a study plan and a group." Her answer to "Can I cope?" is yes, and her stress is eustress. The second student reads it as a threat: "If I fail, I lose my scholarship." Then: "I have no time and no notes." His answer is no, and his stress is distress.
Here's the hopeful part. He can't cancel the exam, but he can change his secondary appraisal by building resources: a study block, borrowed notes, a question for his instructor. One caveat, though. Appraisal isn't "think positive." A person with no money for rent is reading the situation accurately, and the fix there is resources, not a new attitude.
Pause and try this. "I've practiced every dish, and my team is ready." Is that a primary or a secondary appraisal?
Ask yourself which of the two questions it answers.
Here's the answer. It's a secondary appraisal, because it answers "Can I cope?" by naming resources: practice and a ready team.
3. Sound the alarm: fight-or-flight, cortisol, and tend-and-befriend
A cyclist rides down a city street. A car door swings open right in front of her. Before a single word forms in her head, she swerves, her heart pounds, and her breathing speeds up.
That's the fight-or-flight response, the fast, body-wide reaction to a perceived danger in which the sympathetic nervous system speeds the heart and breathing and readies the body to act. Walter Cannon described it in 1915. It runs on two systems. The fast one is adrenaline, a hormone released by the adrenal glands within seconds that helps speed the heart and raise energy. The slower one runs through the HPA axis, the hypothalamic-pituitary-adrenal axis: the hypothalamus signals the pituitary gland, which signals the adrenal glands to release cortisol. Cortisol is a stress hormone that keeps energy available during a long challenge.
Think of it like a relay. Adrenaline runs the sprint, cortisol runs the longer leg, and when the danger passes, the parasympathetic nervous system brings everyone back to the bench. That's the cool-down.
Fight-or-flight isn't the only pattern. Picture a parent who hears a fire alarm in an apartment building. The first move is often to gather the children and knock on a neighbor's door. That's tend-and-befriend, a pattern of responding to stress by protecting and caring for others and reaching out to them for support. Under stress, many people turn toward others, not away.
Pause and try this. Which division of the nervous system revs the cyclist up, and which one calms her down afterward?
Picture the swerve, then the cool-down.
Here's the answer. The sympathetic system mobilizes her for the swerve, and the parasympathetic system calms her once the danger has passed.
4. Follow stress over months: the general adaptation syndrome
The cyclist's stress lasted minutes. Some stress lasts for months. A grandson starts caring for his grandmother after she falls. There are appointments, medications, and nights of broken sleep, and the pressure never lets up.
Hans Selye described what happens to the body under that kind of long stress in 1936. The general adaptation syndrome, or GAS, is his description of the body's response to long-lasting stress in three stages that always come in the same order: the alarm reaction, the resistance stage, and the exhaustion stage.
Let's follow the grandson. In the first week after the fall, he can't eat or sleep, and his heart races. That's the alarm reaction, the first stage, when the body mobilizes quickly to meet a new stressor. For months after that, he manages it all, running on stress hormones, and from the outside he looks fine. That's the resistance stage, when the body stays mobilized and keeps coping with a stressor that hasn't gone away. Then, after a long stretch with no break, he catches one cold after another and feels drained. That's the exhaustion stage, when the body's resources run low and a person becomes more open to illness.
Alarm, resistance, exhaustion. Always in that order. The middle stage is the one people misread, because it can look like everything is fine.
Pause and try this. Someone says the GAS goes resistance, then alarm, then exhaustion. Where's the mistake?
Walk through the grandson's first week again.
Here's the answer. Alarm comes first, because the body mobilizes the moment a new stressor hits, and only then settles into resistance.
5. Connect mind and body: immunity, the heart, and Type A
Those colds weren't a coincidence. When cortisol stays high for long periods, it suppresses immune function. That's one reason long-lasting stress is associated with getting sick more often. Notice the words "associated with." A stressed person may also sleep less and exercise less, and those matter too.
Stress is also associated with heart disease, and here's a story about science correcting itself. In 1959, Meyer Friedman and Ray Rosenman described the Type A behavior pattern, a historical description of people who are competitive, rushed, and impatient, first linked to heart disease as a whole. The Type B behavior pattern described people who are relaxed and easygoing. Later research narrowed the risk mainly to one part of Type A: hostility, a habit of anger, suspicion, and antagonism toward other people.
Picture two drivers stuck in the same traffic jam. One checks the clock every minute, impatient but not angry at anyone. The other leans on the horn, decides every other driver is an idiot, and stays furious long after parking. Both look Type A. Only the second shows hostility, the part research has most consistently associated with heart disease.
Pause and try this. Based on the narrowed finding, which part of the Type A pattern carries the heart risk?
Think about the two drivers.
Here's the answer. Hostility does, because later research narrowed the risk mainly to habitual anger, not to being busy or ambitious.
6. Choose a coping style: problem-focused and emotion-focused
It's late at night, your paper is due in the morning, and your laptop won't turn on. Your stomach drops. Whatever you do next is coping, the thoughts and actions a person uses to manage a stressor and the feelings it brings.
Lazarus and Folkman split coping into two styles. Problem-focused coping is coping that tackles the stressor itself, such as making a plan, asking for an extension, or fixing what went wrong. Emotion-focused coping is coping that manages the feelings a stressor produces, such as taking a walk or talking with a friend, without changing the stressor itself.
The test is one question: does this move change the stressor, or how I feel about it? Borrowing a laptop from the library changes the stressor. So does emailing your instructor. Those are problem-focused. A ten-minute walk calms you down, and so does calling a friend to vent, but the laptop is still dead. Those are emotion-focused. That's two of each.
Neither style is always better. When you can change a stressor, problem-focused coping is often the best first move. When you can't, emotion-focused coping is often the better fit. Most people use both, often in the same evening.
Pause and try this. After the walk, you feel calm. Has the walk solved the laptop problem?
Ask whether the laptop works now.
Here's the answer. No; the walk changed your feelings, not the stressor, so it's emotion-focused coping, not problem-focused.
7. Check the evidence: stress management and the sleep data
You've heard a dozen stress tips. Only a short list has steady research behind it. Social support, regular exercise, enough sleep, relaxation, and mindfulness are associated with better stress outcomes. Social support is the help and connection you get from family, friends, coworkers, or a community. Relaxation is a deliberate practice, such as slow breathing, that lowers the body's arousal. Mindfulness is paying attention to the present moment, on purpose and without judging it.
Now let's read some evidence with care. You've met this small dataset before: ten students, illustrative and constructed for this course, not real data, with their hours of sleep and their next-day quiz scores. Most adults need about 7 to 9 hours of sleep a night. In the dataset, 3 of the 10 students slept less than that, so 30% slept below the guideline. And the correlation coefficient is 0.8457. That's positive and strong: in this sample, students who slept more tended to score higher.
Here's the stress check. Stress is a third variable. A student facing a heavy stressor that week, like a double shift or a family emergency, might both sleep less and score lower. Stress could drive both numbers. Nothing was manipulated, so this is a correlational study. It supports "sleep is associated with higher scores," and nothing stronger.
Pause and try this. A headline says, "Sleep raises grades." What's wrong with that, given how the data were collected?
Think about what the design can claim.
Here's the answer. It turns an association into a cause; the study was correlational, and stress could lower both sleep and scores.
Closing
Let's pull it together. Stress is your response to an event you appraise as a threat or a challenge, and it can energize as eustress or overwhelm as distress. Primary appraisal asks if it's a threat, and secondary appraisal asks if you can cope. In the first seconds, the sympathetic system and adrenaline mobilize you, cortisol follows, and some people tend and befriend. Over months, the body moves through alarm, resistance, and exhaustion. Long stress is associated with weaker immune function, and the Type A heart risk narrowed to hostility. Problem-focused coping changes the stressor; emotion-focused coping manages the feelings. And the evidence supports social support, exercise, sleep, relaxation, and mindfulness, read always as associations.
Next in this module are the slide deck, the Readings & Resources page, the lecture tutorial, the practice set, and the quiz. Next week, in Psychological Disorders & Treatment, stress returns as one half of the diathesis–stress model.
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