Theory of Planned Behavior (TPB) Ajzen (1988)

The Theory of Planned Behavior is widely used to predict human behaviors in many disciplines. According to the Theory of Planned Behavior, Attitude towards the target behavior, Subjective Norms about engaging in the behavior and Perceived Behavior Control influence intention. In addition, an individual's display of a certain behavior is determined by his or her intent to perform that behavior. This chapter describes the origin and history of the Theory of Planned Behavior, its purpose, its limitations and its applications in order to examine acceptance, adoption, use, and continuance of use of Information Systems and services.