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Theory of Reasoned Action

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Encyclopedia of Behavioral Medicine

Definition

The Theory of Reasoned Action (TRA; Ajzen & Fishbein, 1980; Fishbein & Ajzen, 1975) and its extension, the Theory of Planned Behavior (TPB; Ajzen, 1985, 1991), are cognitive theories that offer a conceptual framework for understanding human behavior in specific contexts. In particular, the theory of planned behavior has been widely used to assist in the prediction and explanation of several health behaviors.

Description

According to the initial Theory of Reasoned Action, an intention to engage in a certain behavior is considered the best predictor of whether or not a person actually engages in that behavior. Intentions, in turn, are predicted by attitudes and subjective norms. That is, the more positively a person regards a certain behavior or action and the more they perceive the behavior as being important to their friends, family, or society, the more likely they are to form intentions to engage in the behavior. Azjen, however, noted the importance of a behavior being...

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References and Readings

  • Ajzen, I. (1985). From intentions to action: A theory of planned behavior. In J. Kuhl & J. Beckman (Eds.), Action control: From cognitions to behaviors (pp. 11–39). New York: Springer.

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Correspondence to Lara LaCaille .

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LaCaille, L. (2013). Theory of Reasoned Action. In: Gellman, M.D., Turner, J.R. (eds) Encyclopedia of Behavioral Medicine. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-1005-9_1619

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  • DOI: https://doi.org/10.1007/978-1-4419-1005-9_1619

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4419-1004-2

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