THEORY OF PLANNED BEHAVIOUR

Theory of Planned Behavior (TPB)

A model of behavior change developed by Ajzen in 1985, focusing on intentions, personal beliefs, and social influences.

Behavioral Attitude

The extent to which an individual approves or disapproves of a behavior and considers its outcomes.

Subjective Norms

Personal beliefs about what others think of them and their behavior.

Perceived Behavioral Control

A person's belief regarding how easy or difficult it is to carry out a behavior.

What increases perceived behavioral control?

When an individual has resources.

How do past outcomes influence behavior intention?

If individuals have failed before, they may believe they will fail again.

Example of Behavioral Attitude in smoking

Smoking is relaxing, smoking costs a lot, smoking is bad for my health.

Example of Subjective Norms related to smoking

My colleagues smoke, my girlfriend doesn’t approve of smoking.

Example of Perceived Behavioral Control in smoking

I know I could stop if I have a bit of help.

Outcome of Intention in TPB

Intention leads to the behavior outcome.