Summary
Highlights
The Health Belief Model, developed in the 1950s by the US public health services, aims to understand why individuals do not adopt healthy behaviors despite knowing their benefits. It investigates how beliefs about health impact behavior change.
The model proposes that behavior change is influenced by an individual's belief in the threat of an illness (e.g., how bad obesity is) and their belief in the effectiveness of a proposed behavior to mitigate that threat (e.g., will exercise really prevent obesity?).
Key constructs include perceived susceptibility to a disease, its severity, and the perceived benefits and barriers of a preventative action. Modifying variables such as demographics, race, health inequities, and self-efficacy also play a role, along with 'cues to action'.
The video uses the example of obesity to illustrate perceived susceptibility. Someone with a naturally lean physique and family history of leanness might have low perceived susceptibility to obesity, making messages about reducing obesity less effective for them. Perceived severity refers to how much an individual believes a disease is a serious issue.
Cues to action can bypass other factors in the model. For instance, if all friends start exercising, it can motivate an individual to join them, regardless of their prior beliefs about health risks or benefits, serving as a direct catalyst for behavior change.
Health promoters must consider these beliefs when motivating people. Messages focusing solely on disease prevention might be ineffective if individuals do not believe they are susceptible or that the proposed behavior will make a difference. Understanding these nuances can help in selecting appropriate behavior change models.