Theory of Planned Behavior
Principles:
The Theory of Planned Behavior (TPB) is a middle range theoretical framework developed by Icek Azjen in 1985 to explain and predict human behavior based on attitudes and beliefs. In 1991, Azjen amended his theory to include the concept of perceived behavioral control (Armitage & Conner, 1991). It is recognized as a valid decision-making theory that can predict a wide variety of behaviors. The TPB is based on the concept that, the stronger the intention to perform a given behavior, the greater the likelihood that the individual will engage in that behavior (Herrmann, 2017). Therefore, the TPB posits that actions are controlled by intentions.
The TPB’s core constructs for intention are threefold:
1) Attitude toward the behavior: positive or negative (Azjen, 1991).
2) Social pressure to perform or not perform a behavior (subjective norm) (Ajzen, 1991).
3) Degree of perceived behavioral control: the perceived ease or difficulty of performing the behavior, which pays tribute to past experiences, in addition to anticipated obstacles (Ajzen, 1991).
For an interactive diagram of these constructs, please visit Dr. Azjen's website: http://people.umass.edu/aizen/tpb.diag.html
The Theory of Planned Behavior (TPB) is a middle range theoretical framework developed by Icek Azjen in 1985 to explain and predict human behavior based on attitudes and beliefs. In 1991, Azjen amended his theory to include the concept of perceived behavioral control (Armitage & Conner, 1991). It is recognized as a valid decision-making theory that can predict a wide variety of behaviors. The TPB is based on the concept that, the stronger the intention to perform a given behavior, the greater the likelihood that the individual will engage in that behavior (Herrmann, 2017). Therefore, the TPB posits that actions are controlled by intentions.
The TPB’s core constructs for intention are threefold:
1) Attitude toward the behavior: positive or negative (Azjen, 1991).
2) Social pressure to perform or not perform a behavior (subjective norm) (Ajzen, 1991).
3) Degree of perceived behavioral control: the perceived ease or difficulty of performing the behavior, which pays tribute to past experiences, in addition to anticipated obstacles (Ajzen, 1991).
For an interactive diagram of these constructs, please visit Dr. Azjen's website: http://people.umass.edu/aizen/tpb.diag.html
[QUT IFB101] (2015, March 8). Theory of Planned Behavior [Video File]. Retrieved from https://www.youtube.com/watch?v=nZsxuD3gExE