Introduction
Health psychology studies how behaviour, beliefs, emotions and social conditions relate to health, illness and healthcare. It does not replace medicine; it adds psychological and behavioural understanding to health-related questions.
The central idea is the biopsychosocial view: health outcomes can reflect interactions among biological, psychological and social factors.
Source-Aligned Core Concepts
- Health beliefs and behaviour: People’s beliefs about risk, seriousness, benefits, barriers and their own ability to act can influence behaviours such as seeking care, exercising or following treatment.
- Models of health psychology: The biopsychosocial model integrates biological, psychological and social influences. Health-behaviour models such as the Health Belief Model or planned-behaviour approaches help explain why knowledge alone does not always change behaviour.
- Assessment and intervention: Assessment may examine stress, coping, health beliefs, adherence, behaviour and social support. Interventions may include education, behaviour change, coping skills, motivational approaches and support for treatment adherence.
- Models of stress: Stress can be viewed as a response, a demanding event, or a transaction between demands and a person’s appraisal/resources. The transactional approach emphasizes how the same event may be experienced differently by different people.
- Chronic and terminal illness: Long-term or terminal illness can affect identity, mood, family roles, work, adherence and quality of life. Psychological care may support coping, communication and adjustment alongside medical care.
- Social support: Emotional, informational and practical support can help people cope with illness and stress. The quality and appropriateness of support matter, not merely the number of contacts.
Expanded Master Explanation
The following sections develop the compressed source notes into the academic depth needed for first-time understanding and analytical answer writing.
The biopsychosocial model of health
Health psychology studies how biological processes interact with behaviour, cognition, emotion and social conditions. The biopsychosocial model is not a claim that every disease has a psychological cause. It is a framework for asking how multiple levels influence risk, prevention, treatment adherence, coping and quality of life.
- Biological level: Disease processes, genetics, immune function and physical condition directly matter.
- Psychological level: Beliefs, habits, stress appraisal, coping and emotion can influence behaviour and physiological regulation.
- Social level: Income, work, family support, culture, healthcare access and social inequality affect exposure to risks and capacity to respond.
Why knowledge does not automatically change behaviour
- Health Belief Model: Behaviour is influenced by perceived susceptibility, perceived severity, expected benefits, perceived barriers, cues to action and self-efficacy. Someone may understand a risk yet still not act if barriers appear greater than benefits.
- Theory of planned behaviour: Intentions are shaped by attitudes, perceived social norms and perceived behavioural control. Intentions predict behaviour imperfectly because opportunities and habits also matter.
- Self-efficacy: Belief in one's capability to perform a health behaviour influences initiation and persistence. Effective interventions build manageable mastery experiences rather than relying only on warnings.
- Habit and environment: Repeated behaviour becomes easier when cues and environments support it. Structural interventions such as making healthy options accessible can complement education.
Stress, appraisal and coping
- Stress as stimulus: Some approaches classify external demands or life events as stressors. The limitation is that the same event can be experienced differently by different people.
- Stress as response: Physiological and emotional reactions can be studied directly. This captures bodily consequences but may ignore meaning and context.
- Transactional model: Lazarus and Folkman emphasized appraisal: people evaluate whether an event threatens important goals and whether coping resources are sufficient. Stress therefore emerges from a person-environment transaction.
- Problem-focused coping: Attempts to change the stressor or one's practical relationship to it, for example planning or seeking information.
- Emotion-focused coping: Attempts to regulate emotional distress when the situation cannot immediately be changed. Neither category is always superior; effectiveness depends on controllability and context.
Chronic illness, adherence and social support
- Adherence: Following a treatment plan depends on understanding, side effects, cost, routines, beliefs, communication and access. Labelling non-adherence as simple irresponsibility overlooks these barriers.
- Chronic illness: Long-term illness can affect identity, work, family roles and mood. Psychological support can improve coping and self-management without replacing medical treatment.
- Terminal illness: Care may focus on communication, symptom coping, family support, meaning and quality of life. Psychological work should respect patient preferences and the realities of medical prognosis.
- Social support: Emotional, informational and practical support can buffer stress and improve coping, but unwanted or controlling support may be ineffective. Quality and fit matter more than the number of contacts.
How to Prepare This Topic
- Use the biopsychosocial model as your basic diagram.
- Prepare one health-behaviour example, such as exercise adherence, through beliefs, barriers and social support.
- Compare stress-as-stimulus, stress-as-response and transactional ideas briefly.
- For chronic illness, write psychological needs without making medical treatment claims.
Common Confusion / Mistake
| Avoid this error Do not imply that illness is caused by a person’s attitude alone. Biological disease processes are real; psychology examines behavioural and psychosocial influences alongside them. |
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How to Build an Examination Answer
Define health psychology, introduce the biopsychosocial model, explain beliefs/behaviour, stress models, assessment/intervention, chronic illness and social support.
Evidence and Source Notes
Source: • Spielman, Jenkins, & Lovett, Psychology 2e (OpenStax, 2020).
Source: • Lazarus & Folkman, Stress, Appraisal, and Coping (1984).
Key Takeaways
Key takeaway: • Health behaviour is shaped by more than knowledge.
Key takeaway: • Stress depends partly on appraisal and coping resources.
Key takeaway: • Psychological intervention can complement medical treatment.
Key takeaway: • Social support can affect coping and treatment behaviour.
Key takeaway: • Connect definitions with mechanisms, examples and limitations; do not present the topic as a list of isolated terms.
30-Second Self-Check
- □ Can I explain health psychology in my own words without notes?
- □ Can I make at least one correct comparison, diagram, framework or example from this topic?
- □ Can I turn this topic into a clear introduction + 4–6 headings + conclusion in under five minutes?