Theory of Reasoned Action (Fig. 2) provides an explanation of the psychological process of the conscious human behavior and it attempts to clarify determinants of behavior (Ajzen and Fishbein, 1980).
Based on this theory, the intention behind an individual’s behavior affect the actual performance of the behavior and attitudes towards the subjective norms, in which behavioral intention is the measurement of the extent of people’s inclination to exert effort, or their plan to exert effort for the performance of behavior (Ajzen, 1991).