Glossary
The Health Belief Model: Origins, Evidence, and Limitations
What is the Health Belief Model?
The Health Belief Model (HBM) explains health-related action through beliefs about a threat and what can be done about it. Its central questions concern perceived susceptibility, severity, benefits, and barriers. Descriptions of the model also consider cues to action and self-efficacy.
Its appeal is straightforward: people can view the same health problem and proposed action very differently. Understanding those beliefs can be useful. It does not follow that changing a belief will remove the obstacles to action.
Origins of the Health Belief Model
The model emerged in the 1950s from work on participation in health services and screening. Its early developers included Irwin Rosenstock, Godfrey Hochbaum, Stephen Kegeles, and Howard Leventhal. Maiman and Becker’s 1974 account discusses these origins. Rosenstock's 1966 paper is an important early source. Rosenstock, Strecher, and Becker's 1988 paper developed the role of self-efficacy: believing an action is useful differs from believing you can carry it out.
The Six Constructs
Perceived susceptibility
How likely does someone think the health problem is for them? This is a belief about personal risk. A low estimate may matter, but it does not determine behavior by itself.
Perceived severity
How serious does the person believe the consequences would be? Someone can think an illness is likely but relatively minor, or unlikely but serious. Susceptibility and severity concern different parts of perceived threat.
Perceived benefits
What does the person expect the proposed action to achieve? Believing a screening test or preventive action is useful is a different question from believing the health problem is serious.
Perceived barriers
What difficulties or costs does the person anticipate? Time, money, inconvenience, discomfort, or embarrassment may enter the decision. A perceived barrier can reflect a real obstacle. Calling it a belief does not make it imaginary.
Cues to action
What prompts consideration or performance of the action? A reminder, a symptom, or a conversation might be relevant. Researchers need to specify what they count as a cue in the particular study.
Self-efficacy
How confident is the person that they can perform the action? Someone might believe a behavior would help while doubting their ability to carry it out.
What Does the Evidence Show?
Carpenter's 2010 meta-analysis examined 18 longitudinal studies with 2,702 participants. Perceived benefits and barriers were the most consistent predictors among the four core beliefs studied. Associations varied with follow-up time and the kind of behavior.
This evidence concerns prediction. It does not show that changing a belief necessarily changes behavior, or that the model provides a reliable intervention recipe. That distinction matters much more in practice than whether a familiar framework can describe the problem afterward.
Using the Model in Practice
For a screening appointment, someone may believe the test is useful but face transport, cost, or scheduling problems. Another person may have access but see little benefit in attending. These situations require different investigation.
Start by specifying the action and the people involved. Ask about the relevant beliefs, check actual constraints, and consider whether a different service arrangement would meet the need more effectively. More alarming information does not create transport or time off work.
Limitations and Criticisms
Prediction is not intervention evidence.
A belief associated with behavior is not automatically the best target for change. Test the proposed intervention and its outcomes.
The concepts need clear measures.
State how susceptibility, severity, benefits, barriers, cues, and confidence are assessed. A list of labels does not specify how they interact in every situation.
Beliefs do not describe the whole setting.
Skills, routines, other people, and practical access can matter. A narrow focus on threat perception can miss the real problem.
Different behaviors pose different demands.
Attending one appointment and maintaining a demanding routine are not interchangeable outcomes. Evidence about one should not be presented as proof about the other.
HBM vs. Other Models
- The Theory of Planned Behavior emphasizes attitudes, subjective norms, perceived control, and intentions.
- COM-B explicitly organizes capability, opportunity, and motivation.
- Social Cognitive Theory considers personal factors, behavior, and environment in reciprocal relationships.
These differences can help decide which questions to ask. A fair effectiveness comparison needs comparable studies and outcomes.
When to Use the HBM
It can be useful when beliefs about a health problem and a proposed action need investigation. Use it as part of a broader assessment, especially when people already want to act but cannot. Do not assume the solution is to increase perceived threat.
Frequently Asked Questions
What are the six constructs of the Health Belief Model?
Perceived susceptibility, perceived severity, perceived benefits, perceived barriers, cues to action, and self-efficacy.
Does the Health Belief Model work?
Some of its beliefs predict later behavior in the reviewed studies, with benefits and barriers the most consistent in Carpenter's review. That does not establish a fixed success rate for HBM-based interventions.
How is HBM different from the Theory of Planned Behavior?
HBM focuses on health threats and beliefs about responding to them. TPB organizes intentions around attitudes, subjective norms, and perceived control.
Is HBM still useful?
It offers a vocabulary for questions about health beliefs. Its usefulness in a project depends on whether those questions reveal something that helps improve the action or service.
Why it matters
Believing an action is worthwhile and being able to do it are different problems. The HBM helps separate some of the beliefs involved. The practical task is to find what actually prevents action and respond to that.