What aspect does the Theory of Planned Behavior emphasize?

The Theory of Planned Behavior emphasizes the ability to control behavior, which is a central component of the model. This theory suggests that intention is the immediate precursor to behavior and that this intention is influenced by three primary factors: attitudes toward the behavior, subjective norms, and perceived behavioral control.

Perceived behavioral control refers to the extent to which individuals believe they can enact a particular behavior, reflecting their confidence in their ability to perform it. This aspect is critical because even with a positive attitude and social support, if individuals feel they lack control over their circumstances or resources to act, they are less likely to follow through with the intended behavior. Therefore, this theory highlights how an individual's perception of control can significantly impact their health-related decisions and actions.

The other aspects provided in the choices, such as costs associated with healthcare, the role of technology, and the impact of policies, are relevant in the broader context of health behavior but do not directly align with the core emphasis of the Theory of Planned Behavior, which is predominantly about the individual's ability to control and make informed decisions regarding their behaviors.