Questions: Health Promotion Program Design and Behavior Change Theories

Question 1

A public health department designs a school-based curriculum teaching students about healthy eating. After one year, student knowledge scores improve significantly but obesity rates are unchanged. Which explanation best captures why this program likely failed to change behavior?

• A. The curriculum was too long; shorter interventions are more effective at changing behavior
• B. Children are too young to use nutrition knowledge to change eating behavior
• C. The intervention only addressed the individual knowledge level while structural barriers — school cafeteria offerings, neighborhood food access — remained unchanged
• D. Obesity is primarily genetic and cannot be meaningfully reduced by educational programs

Answer: (C)

This is the central lesson of the social-ecological model: individual-level interventions that only target knowledge will hit a ceiling when organizational, community, and policy barriers remain intact. If the school cafeteria still sells only processed food and the neighborhood lacks grocery stores, improved nutrition knowledge cannot translate to behavior change. Options A and B are not supported by evidence. Option D overstates genetic determinism. The social-ecological model is both diagnostic — explaining why single-level interventions fail — and prescriptive, pointing to where additional leverage must be applied.

Question 2

According to the Theory of Planned Behavior, which variable is MOST likely to explain why a person who intends to exercise regularly still fails to do so?

• A. Low perceived susceptibility to disease from inactivity
• B. Negative subjective norms — the person's social environment treats exercise as unusual or vain
• C. Insufficient health knowledge about the benefits of physical activity
• D. High perceived severity of the health consequences of inactivity

Answer: (B)

The Theory of Planned Behavior adds subjective norms to the intention-behavior model. Even when intention exists, if the person's reference group does not endorse the behavior, the intention may not translate to action. Options A and D describe Health Belief Model variables (perceived susceptibility and severity), which address motivation to act but not the social-normative pressure that can undermine existing intentions. Option C is insufficient because knowledge alone does not drive behavior — the entire point is that the knowledge-behavior gap persists even when knowledge is present.

Question 3

A health promotion program that successfully changes individual behavior will maintain that change even without addressing organizational or community-level barriers.

• T. True
• F. False

Answer: False

The social-ecological model predicts the opposite: individual-level change is undermined when structural barriers remain. A person may learn to want healthier food but lack access to it; may intend to exercise but have no safe public spaces; may quit smoking but live in environments saturated with tobacco marketing. The durability of individual behavior change depends substantially on whether the environments in which people live and work support or undermine those changes. 'Individual versus structural' is not an 'either-or' — the most effective programs work across levels precisely because individual change is fragile without structural support.

Question 4

Formative research is most useful at the end of program design, to verify cultural appropriateness before full rollout.

• T. True
• F. False

Answer: False

Formative research is conducted *before* designing the intervention, not after. Its purpose is to diagnose the actual barriers, facilitators, and cultural context of the target population so that the program addresses the right problem through the right channels with the right messengers. Conducted at the end, it is too late to use the findings to shape the design. This is a critical ordering error in practice: practitioners who trust their own assumptions and skip formative research risk designing technically sound programs that miss the actual problem or offend the target audience.

Question 5

Why is knowledge necessary but insufficient for behavior change, according to the major behavior change theories?

Model answer: Knowledge tells people what to do but does not address the other factors that determine whether they actually do it: perceived barriers and self-efficacy (can I do this?), social norms (do people I care about expect or support this?), and structural access (is the healthy choice actually available and affordable?). The Health Belief Model adds perceived susceptibility and barriers; social cognitive theory adds self-efficacy; the Theory of Planned Behavior adds subjective norms. All these models converge on the insight that motivation and knowledge are insufficient without confidence, social support, and structural access.

This is the central finding that distinguishes public health from health education. 'Just inform them' campaigns fail not because people reject the information, but because knowledge activates only one determinant of behavior. Someone may know exercise is healthy, believe they are at risk, intend to exercise — and still not exercise because they lack confidence, face social stigma, have no safe park nearby, or work two jobs with no time left over. Effective programs diagnose which determinants are the binding constraints for the specific population before choosing an intervention strategy.