The Theory of Planned Behavior (TPB) started as the Theory of Reasoned Action in 1980 to predict an individual's intention to engage in a behavior at a specific time and place. The theory was intended to explain all behaviors over which people have the ability to exert self-control. The key component to this model is behavioral intent; behavioral intentions are influenced by the attitude about the likelihood that the behavior will have the expected outcome and the subjective evaluation of the risks and benefits of that outcome. Show
The TPB has been used successfully to predict and explain a wide range of health behaviors and intentions including smoking, drinking, health services utilization, breastfeeding, and substance use, among others. The TPB states that behavioral achievement depends on both motivation (intention) and ability (behavioral control). It distinguishes between three types of beliefs - behavioral, normative, and control. The TPB is comprised of six constructs that collectively represent a person's actual control over the behavior.
Limitations of the Theory of Planned BehaviorThere are several limitations of the TPB, which include the following:
The TPB has shown more utility in public health than the Health Belief Model, but it is still limiting in its inability to consider environmental and economic influences. Over the past several years, researchers have used some constructs of the TPB and added other components from behavioral theory to make it a more integrated model. This has been in response to some of the limitations of the TPB in addressing public health problems. return to top | previous page | next page
Is a pattern of behavior that is expected of a person in a given setting or group?SOCIAL ROLES
A social role is a pattern of behavior that is expected of a person in a given setting or group (Hare, 2003). Each one of us has several social roles.
What is a social role socially defined pattern of behavior?Social roles are a socially defined pattern of behavior that is expected of persons who occupy a certain social position or belong to a particular social category. The construct of social roles is central to the social sciences, and it came into general use during the 1920s and 1930s by analogy to the theatre.
What is a social role person's knowledge about the sequence of events in a specific setting?Because of social roles, people tend to know what behavior is expected of them in specific, familiar settings. A script is a person's knowledge about the sequence of events expected in a specific setting (Schank & Abelson, 1977).
What term refers to the process of trying to determine the cause of a person's behavior?The process of trying to determine the causes of people's behavior is known as causal attribution (Heider, 1958). Because we cannot see personality, we must work to infer it.
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