Fundamentals of Nursing · Health, Wellness, and Community-Based Health Care
Models of Health
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A Model A simplified framework, or lens, for understanding a complex idea Full entry → is a simplified lens for understanding a complex idea. Nobody can see "health" directly — so nurses, like scientists, work through models that say what health is, what causes it to change, and what counts as a good outcome. This topic introduces the models most common in nursing education and practice: the Biomedical model Health = absence of signs and symptoms of disease Full entry →, Smith's four models of health, the Health–illness continuum Health and illness as moving points on a dynamic range Full entry →, the Health Belief Model, Pender's Health Promotion Model, and Maslow's Hierarchy of needs Maslow's ordering of human needs from basic to advanced Full entry →.
No single model is "the truth." Each one highlights certain features and ignores others. The biomedical model excels at acute illness but says little about meaning or function; the Health Belief Model explains why people do or do not take preventive action but says little about physiology. Skilled nurses hold several models at once and choose the lens that fits the situation — the same patient can be "healthy" by one model and "unhealthy" by another, and that tension is useful information, not a contradiction.
Why this matters
Models quietly control what you look for, what you ask, and what you count as success. If your only model says "health = normal labs," you will discharge a patient whose labs are normal even when they cannot return to work or sleep. Models also explain puzzling patient behavior: the Health Belief Model shows why a well-informed person still skips screenings (a barrier, a belief about risk, or low confidence), turning frustration into a target for intervention. On exams, "which model fits this situation" questions are common; in practice, model awareness is what separates care that treats a condition from care that helps a person.
The college version
Core Concepts
The biomedical (clinical) model
The biomedical model defines health as the absence of signs and symptoms of disease. Its strength is precision: it focuses on pathophysiology, drives accurate diagnosis, and supports the fast, intervention-heavy work of acute care. Its limits are just as real: it overlooks psychosocial, spiritual, and environmental influences; it defines people by their pathology; and it offers little guidance for chronic illness, prevention, or living well with a condition that cannot be cured.
Smith's four models of health
Nursing scholar Judith Smith described four ways people (and clinicians) conceptualize health:
- Clinical model — health is the absence of disease; the person is "healthy" when signs and symptoms are gone.
- Role-performance model Health = ability to perform expected roles Full entry → — health is the ability to perform expected social roles (worker, parent, student). A person who cannot work or care for children is unwell even without pathology.
- Adaptive model Health = effective adjustment to change Full entry → — health is flexible, effective adjustment to changing circumstances. Health is demonstrated in how a person responds to stress, loss, or a new diagnosis.
- Eudaimonistic model Health = flourishing and self-actualization Full entry → — health is exuberant well-being and self-actualization: the fullest development of a person's potential, which includes but goes far beyond biology.
In practice nurses blend these. A good outcome for one patient means returning to work (role-performance); for another it means adapting to a new normal (adaptive); for another it means recovering a sense of purpose (eudaimonistic). Asking which model the patient is using — and which one you are using — prevents mismatched goals.
The health–illness continuum
Instead of health and illness as opposites, this model places them on a dynamic continuum that people move along throughout life. John Travis's illness–wellness continuum runs from premature death at one extreme, through disability, symptoms, and signs, to a neutral point, then onward through awareness, education, growth, and high-level wellness. Travis contrasts the treatment paradigm (patching damage on the illness side) with the wellness paradigm (moving deliberately toward the wellness side). Two crucial implications: movement happens in both directions, and a person with a chronic disease can still move toward wellness — the continuum is about direction, not perfection.
The Health Belief Model (HBM)
The HBM asks: why do people take preventive or health actions? It proposes that action depends on the person's beliefs:
- Perceived susceptibility A person's belief about their own risk of illness Full entry → — "How likely am I to get this?"
- Perceived severity — "How serious would it be?"
- Perceived benefits — "Will the action actually help?"
- Perceived barriers — "What will it cost me (money, time, discomfort, fear)?"
- Cues to action — reminders such as a provider's advice, a poster, or a friend's experience
- Self-efficacy Belief in one's ability to perform a behavior Full entry → — "Am I capable of doing this?"
The HBM is a practical troubleshooting tool: when a patient is not acting, identify which belief is blocking them. Fear of the test, doubt that the treatment works, or a belief that "it won't happen to me" each call for a different nursing response.
Pender's Health Promotion Model (HPM)
The HPM complements the HBM. Where the HBM explains avoidance of illness (often fear-driven), the HPM explains approach toward wellness: people engage in health-promoting behavior when their individual characteristics and experiences, plus behavior-specific cognitions (perceived benefits, barriers, self-efficacy, interpersonal and situational influences), lead them to commit to a plan of action. The HPM is the theoretical backbone of lifestyle counseling — exercise, nutrition, stress management — because it focuses on what moves people forward, not on what they fear.
Maslow's hierarchy of needs
Maslow's hierarchy orders human needs from basic to advanced: physiological, safety, love/belonging, esteem, and self-actualization. Nurses use it as a prioritization guide: basic physiologic needs (airway, breathing, circulation, pain, hunger) come before higher needs such as teaching about support groups or exploring self-actualization. In practice it is not a rigid ladder — a person can work on higher needs while lower ones are only partially met — but the ordering remains a reliable answer to "what do I do first?"
Common Confusions
| Do Not Confuse | With | Difference |
|---|---|---|
| The model | The reality | A model is a simplified lens; real health is more complex than any single model |
| Health Belief Model | Pender's Health Promotion Model | HBM explains avoiding illness (often fear-driven); HPM explains pursuing wellness (approach-driven) |
| A point on the continuum | A permanent state | People move back and forth along the continuum throughout life |
| Maslow's hierarchy | A rigid ladder | It is a prioritization guide; higher needs can matter even when lower needs are only partially met |
Eli explains
The same idea, in plain words
Explain it like I’m 10
A model of health is like a pair of glasses: different glasses show you different things about the same person. One pair only shows whether the body is broken. Another pair shows whether the person can do their job, adapt to changes, or feel great about life. Nurses try on several pairs of glasses so they don't miss what matters to the person wearing the illness.
Worked example
Mrs. Chen, 68, was recently told she has type 2 diabetes. Watch how the model in use changes the plan. Under the biomedical model, the goal is simple: normal glucose readings. But Mrs. Chen tells the nurse, "I can't pick up my grandson anymore when my sugar drops, and I feel like my life is over." The role-performance lens shows her real complaint: she cannot do her grandmother job. The eudaimonistic lens shows the second one: she has lost her sense of purpose. The nurse layers on the Health Belief Model: Mrs. Chen believes insulin "means I failed," a barrier that would block any treatment plan. Working together, they set a goal she actually owns — having steady energy to care for her grandson — and the nurse addresses the failure belief directly, connecting self-management to the role she values. Same diagnosis, completely different care plan, because the nurse deliberately changed lenses. Note that each model contributed something the others missed.
Key takeaways
- A model is a lens, not a claim about reality — each one has strengths and limits.
- Smith's four models: clinical, role-performance, adaptive, eudaimonistic.
- Travis's continuum: health is dynamic; the treatment paradigm patches damage, the wellness paradigm moves toward well-being.
- HBM constructs: perceived susceptibility, severity, benefits, barriers, cues to action, self-efficacy.
- Pender's HPM explains behavior aimed at reaching wellness; the HBM explains behavior aimed at avoiding illness.
- Maslow: physiological needs first — the classic prioritization tool for nursing care.
- The biomedical model alone is insufficient for chronic disease, prevention, and psychosocial care.
Check yourself
5 review questions from the chapter. Try each one, then open the answer.
List Smith's four models of health.
Show answer
Clinical, role-performance, adaptive, and eudaimonistic.
What is the difference between the treatment paradigm and the wellness paradigm on Travis's continuum?
Show answer
The treatment paradigm repairs damage on the illness side of the continuum; the wellness paradigm deliberately moves the person toward high-level wellness.
Name the six constructs of the Health Belief Model.
Show answer
Perceived susceptibility, perceived severity, perceived benefits, perceived barriers, cues to action, and self-efficacy.
A patient says, "That quit-smoking program won't work for me." Which HBM construct is blocking action?
Show answer
Low perceived benefits — the patient doubts the action will help. (Low self-efficacy could also play a role, and both should be explored.)
Why would a nurse assess a patient's work and family roles before discharge?
Show answer
Because the role-performance model says health includes the ability to fulfill expected roles; a discharge plan that ignores roles is likely to fail at home.
Study tools & related lessonsKey vocabulary · Related
Key vocabulary
- Model
- A simplified framework, or lens, for understanding a complex idea
- Biomedical model
- Health = absence of signs and symptoms of disease
- Role-performance model
- Health = ability to perform expected roles
- Adaptive model
- Health = effective adjustment to change
- Eudaimonistic model
- Health = flourishing and self-actualization
- Health–illness continuum
- Health and illness as moving points on a dynamic range
- Perceived susceptibility
- A person's belief about their own risk of illness
- Self-efficacy
- Belief in one's ability to perform a behavior
- Hierarchy of needs
- Maslow's ordering of human needs from basic to advanced
Sources & references
This lesson was adapted from the open educational references above; their licenses and attributions are preserved. See Copyright & Licensing.
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