Health Communication (COMX) Practice Test 2026 – Complete Exam Preparation

The Theory of Planned Behavior posits that the likelihood of an individual performing a specific behavior is largely determined by their intention to do so, which is influenced by three key components: attitudes towards the behavior, subjective norms, and perceived behavioral control. The concept of perceived behavioral control is particularly relevant to the distinction between wanting to perform a behavior and actually executing it. This component incorporates an individual's perception of their ability or resources to carry out the behavior, thus encapsulating both their motivation and capacity to act.

When someone expresses a desire to engage in a behavior, that desire alone does not guarantee action. The theory suggests that if an individual believes they have the necessary resources, skills, or opportunities—essentially a sense of control over the action—they are more likely to translate that desire into concrete action. Conversely, if they perceive barriers or limitations that hinder their ability to enact the behavior, even strong intentions may not lead to successful outcomes. Therefore, the emphasis on the strength of intentions and the perceived ability to carry out the behavior is vital in understanding the behavior-action gap highlighted in this theory.