Mental and Physical Health

What you'll learn

This revision guide covers the essential content on mental and physical health within the AP Psychology specification. You'll explore how psychological factors influence physical wellbeing, the biology and psychology of stress, and evidence-based interventions for promoting health. This material connects biological, cognitive, and social perspectives to explain health outcomes.

Key terms and definitions

Stress — a physiological and psychological response to perceived threats or demands (stressors) that challenge an organism's ability to cope

General Adaptation Syndrome (GAS) — Selye's three-stage model of the body's physiological response to prolonged stress: alarm, resistance, and exhaustion

Psychoneuroimmunology — the study of how psychological factors, the nervous system, and the immune system interact to influence health

Health psychology — the branch of psychology concerned with how biological, psychological, and social factors influence health and illness

Coping — cognitive and behavioural efforts to manage stressful situations or reduce emotional distress

Biopsychosocial model — an integrative framework viewing health and illness as products of biological, psychological, and social factors

Type A behaviour pattern — a personality characterised by competitiveness, time urgency, and hostility, associated with increased cardiovascular disease risk

Psychophysiological disorders — physical conditions (e.g., ulcers, hypertension) in which psychological factors play a significant causal or maintaining role

Core concepts

The stress response and its biological mechanisms

When the brain perceives a threat, the sympathetic nervous system activates the fight-or-flight response. The hypothalamus triggers two primary pathways:

Sympathetic-Adreno-Medullary (SAM) pathway:

• Rapid response system activated within seconds
• Sympathetic neurons stimulate the adrenal medulla
• Release of adrenaline (epinephrine) and noradrenaline (norepinephrine)
• Increases heart rate, blood pressure, blood glucose, and respiratory rate
• Redirects blood flow to skeletal muscles
• Prepares body for immediate physical action

Hypothalamic-Pituitary-Adrenal (HPA) axis:

• Slower response system, peaks after several minutes
• Hypothalamus releases corticotropin-releasing hormone (CRH)
• CRH stimulates pituitary gland to secrete adrenocorticotropic hormone (ACTH)
• ACTH triggers adrenal cortex to release cortisol
• Cortisol increases blood glucose, suppresses immune function, and aids in metabolism
• Sustained activation can lead to health problems

General Adaptation Syndrome describes the body's response to chronic stress across three stages:

1. Alarm reaction — initial shock and counter-shock response; SAM pathway dominates
2. Resistance — body adapts to continued stressor; cortisol levels remain elevated; resources depleted
3. Exhaustion — prolonged stress overwhelms adaptive resources; increased vulnerability to illness, organ damage, or death

Research demonstrates that chronic stress impairs immune function. Studies show medical students exhibit reduced natural killer cell activity during examination periods compared to baseline. Prolonged cortisol exposure suppresses lymphocyte production and inflammatory responses, increasing susceptibility to infection and disease.

Psychological factors influencing physical health

Cognitive appraisal determines whether situations are perceived as stressful. Lazarus identified two stages:

• Primary appraisal — evaluating whether an event is irrelevant, benign-positive, or stressful
• Secondary appraisal — assessing available coping resources and options

The same objective situation produces different stress responses depending on individual interpretation. A public presentation might be perceived as threatening (distress) or challenging (eustress).

Personality factors correlate with health outcomes:

Type A behaviour pattern involves:

• Intense competitiveness and achievement orientation
• Time urgency and impatience
• Hostility and aggression

Friedman and Rosenman's longitudinal research found Type A individuals had double the incidence of coronary heart disease compared to Type B personalities. Subsequent research identified the hostility component as the primary toxic element, rather than competitiveness alone.

Hardiness (Kobasa) comprises three characteristics protecting against stress:

• Commitment — deep involvement in life activities
• Control — belief in personal influence over events
• Challenge — viewing change as opportunity rather than threat

Hardy individuals experience fewer stress-related illnesses even under high stress.

Optimistic explanatory style (Seligman) correlates with better health outcomes. Optimists attribute negative events to external, unstable, specific factors, whilst pessimists make internal, stable, global attributions. Optimism predicts faster post-surgical recovery, better immune function, and increased longevity.

Coping strategies and their effectiveness

Problem-focused coping involves direct action to change or manage the stressor itself:

• Planning and implementing solutions
• Seeking information or assistance
• Taking decisive action
• Most effective when situations are controllable

Emotion-focused coping aims to regulate emotional responses to stressors:

• Cognitive reappraisal or reframing
• Seeking emotional support
• Distraction or avoidance
• Relaxation techniques
• Most effective when situations are uncontrollable

Research indicates flexible coping — matching strategy to situational demands — produces optimal outcomes. Carver's studies demonstrate that relying exclusively on either approach limits effectiveness.

Social support serves three primary functions:

1. Emotional support — empathy, caring, reassurance
2. Instrumental support — tangible aid and services
3. Informational support — advice, guidance, feedback

Meta-analyses reveal strong correlations between social support and reduced mortality, faster recovery from illness, and enhanced immune function. Social isolation represents a health risk comparable to smoking or obesity.

Perceived control powerfully influences health. Langer and Rodin's nursing home study found residents given increased control over daily decisions showed improved health and reduced mortality compared to matched controls. Perceived lack of control leads to learned helplessness — passive acceptance of aversive situations — associated with depression and impaired immune function.

Psychophysiological disorders and the mind-body connection

Psychoneuroimmunology research demonstrates bidirectional communication between psychological processes and immune function:

• Stress hormones suppress T-lymphocyte and natural killer cell activity
• Cytokines (immune system proteins) influence brain function and mood
• Classical conditioning can modify immune responses (Ader and Cohen's research)
• Chronic stress correlates with slower wound healing and increased inflammation

Cardiovascular disease exemplifies psychosocial influences:

• Chronic stress elevates blood pressure and promotes atherosclerosis
• Depression following myocardial infarction predicts poorer prognosis
• Work stress (particularly low control, high demand) increases coronary risk
• Acute anger episodes can trigger cardiac events in vulnerable individuals

Psychophysiological disorders involve genuine physical pathology influenced by psychological factors:

• Tension headaches and migraines
• Irritable bowel syndrome
• Essential hypertension
• Peptic ulcers (though H. pylori bacteria identified as primary cause, stress affects symptom severity)

The biopsychosocial model provides the most comprehensive framework for understanding health and illness. Unlike earlier biomedical models focusing exclusively on biological factors, this integrative approach recognises:

• Biological factors — genetics, physiology, pathogens
• Psychological factors — behaviours, beliefs, emotions, coping styles
• Social factors — relationships, socioeconomic status, culture, healthcare access

Health-promoting interventions

Stress management programmes combine multiple evidence-based techniques:

Relaxation training:

• Progressive muscle relaxation (Jacobson) — systematic tension and release of muscle groups
• Controlled breathing exercises
• Meditation and mindfulness practices
• Reduces physiological arousal and sympathetic activation

Biofeedback:

• Electronic monitoring provides real-time information about physiological states
• Enables learning voluntary control over heart rate, blood pressure, muscle tension
• Meta-analyses demonstrate effectiveness for tension headaches and hypertension

Cognitive-behavioural interventions:

• Identifying and challenging dysfunctional thoughts
• Stress inoculation training (Meichenbaum) — preparation, skill acquisition, application
• Developing realistic appraisals and adaptive coping strategies

Aerobic exercise:

• Reduces depression and anxiety symptoms
• Improves cardiovascular health
• Enhances stress resilience through physiological conditioning
• Recommended minimum: 150 minutes moderate-intensity activity weekly

Health behaviour change requires addressing multiple factors. The Health Belief Model identifies key determinants:

• Perceived susceptibility to illness
• Perceived severity of consequences
• Perceived benefits of preventive action
• Perceived barriers to action
• Cues to action (triggers)
• Self-efficacy (confidence in capability)

Effective interventions increase perceived threat and benefits whilst reducing barriers and building self-efficacy through skills training and social support.

Worked examples

Example 1: Biological stress mechanisms (6 marks)

Question: Explain how the body's stress response systems prepare the organism to deal with immediate threats.

Model answer: When a threat is perceived, the sympathetic nervous system activates the SAM pathway (1 mark). The adrenal medulla releases adrenaline and noradrenaline into the bloodstream (1 mark). These hormones increase heart rate and blood pressure, ensuring oxygen-rich blood reaches muscles quickly (1 mark). The HPA axis simultaneously activates, with the hypothalamus releasing CRH (1 mark). This triggers the pituitary to release ACTH, stimulating the adrenal cortex to secrete cortisol (1 mark). Cortisol increases available blood glucose, providing energy for sustained physical or mental effort (1 mark).

Examiner note: This answer systematically covers both stress pathways, identifies specific structures and hormones, and explains adaptive functions. Each distinct point earns a mark.

Example 2: Psychological factors in health (8 marks)

Question: Evaluate the role of personality factors in physical health outcomes.

Model answer: Research identifies Type A behaviour pattern as a cardiovascular risk factor (1 mark). Friedman and Rosenman found Type A individuals had twice the coronary heart disease incidence of Type B personalities in their longitudinal study (1 mark). However, subsequent research refined this finding, identifying hostility as the primary toxic component rather than competitiveness alone (1 mark).

Hardiness protects against stress-related illness through commitment, control, and challenge perceptions (1 mark). Kobasa's research with executives found hardy individuals reported fewer illnesses despite equivalent stress levels (1 mark).

Optimistic explanatory style correlates with better health outcomes (1 mark). However, correlation doesn't establish causation; healthier individuals may develop more optimistic outlooks (1 mark). Additionally, personality interactions with behaviour complicate interpretation — Type A individuals may engage in unhealthy behaviours like smoking or overworking that directly damage health (1 mark).

Examiner note: Effective evaluation requires both supporting evidence and critical analysis, including methodological limitations and alternative explanations.

Example 3: Coping strategies application (4 marks)

Question: Anna faces university examinations next month. Recommend appropriate coping strategies and justify your choices.

Model answer: Problem-focused coping would be appropriate because examinations are controllable through preparation (1 mark). Anna should develop a revision timetable and implement effective study techniques (1 mark). Emotion-focused coping could address anxiety through relaxation training or exercise (1 mark). Social support, such as study groups, would provide both instrumental help with difficult material and emotional reassurance (1 mark).

Examiner note: Application questions require specific recommendations linked to scenario details with psychological justification.

Common mistakes and how to avoid them

• Confusing the SAM pathway and HPA axis. Remember SAM is rapid (seconds) and involves adrenaline; HPA is slower (minutes) and involves cortisol. Create a comparison table showing timing, hormones, and functions.

• Describing stress as purely negative. Recognise that eustress (positive stress) can enhance performance and motivation. The Yerkes-Dodson law shows moderate arousal optimises performance.

• Assuming coping strategies are universally effective. Effectiveness depends on context and controllability. Problem-focused coping fails when situations are uncontrollable; emotion-focused strategies prove inadequate for controllable problems requiring action.

• Treating correlation as causation in health psychology research. Personality-health correlations may reflect third variables (socioeconomic status, genetics) or reverse causation (illness affecting personality). Always acknowledge limitations in observational studies.

• Neglecting evaluation in extended responses. Simply describing theories or research earns limited marks. Critical analysis — comparing competing explanations, identifying methodological limitations, considering cultural or individual differences — demonstrates higher-order thinking.

• Overlooking the biopsychosocial model's integrative nature. Avoid reducing complex health phenomena to single factors. Comprehensive answers address biological, psychological, and social contributions and their interactions.

Exam technique for "Mental and Physical Health"

• Distinguish "describe," "explain," and "evaluate" command words. Describe requires identifying features; explain requires mechanisms or reasons; evaluate requires weighing strengths and limitations with supporting evidence.

• Structure extended responses logically. Begin with definitions, present evidence systematically (research studies with findings), then provide balanced evaluation. Allocate roughly one mark per well-developed point.

• Support claims with research evidence. Name specific researchers (Selye, Lazarus, Kobasa), describe study designs and findings briefly, and link evidence explicitly to the question. Generic statements earn minimal credit.

• Apply psychological knowledge to novel scenarios. Application questions test understanding beyond memorisation. Identify relevant concepts, explain how they relate to scenario specifics, and justify recommendations with psychological principles.

Quick revision summary

Stress activates two pathways: the rapid SAM system releasing adrenaline, and the slower HPA axis releasing cortisol. Prolonged stress follows Selye's GAS stages and impairs immune function. Psychological factors including personality (Type A, hardiness, optimism), cognitive appraisal, and perceived control influence health outcomes. Problem-focused coping addresses controllable stressors; emotion-focused coping manages emotional responses. Social support, exercise, relaxation training, and cognitive-behavioural interventions promote health. The biopsychosocial model integrates biological, psychological, and social factors in understanding health and illness.