The theory of planned behavior includes the basic ideas of the theory of reasoned action but adds another important variable to the model.This variable is _____.

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The theory of planned behavior includes the basic ideas of the theory of reasoned action (attitude, subjective norm, and perceived behavioral control) but adds another important variable to the model: a person's perception of control over the outcome of the situation. This reflects that people may intend to perform a behavior but may lack the control to actually carry it out.

The Theory of Planned Behavior Includes the Basic Ideas of the Theory