According to Fishbein and Ajzen’s theory of reasoned action, to predict a person’s intention to perform a behavior such as green buying behavior, one must know the attitudes toward that behavior as well as subjective norms concerning that specific behavior (see Figure 1). Fishbein and Ajzen (1975) used the term attitudes to express how much a person likes an object, for example, a behavior. Attitudes are affected by the beliefs about consequences of that behavior. Here, beliefs refer to the cognition of a person that an object holds specific attributes, for example, that buying a green product contributes to the mitigation of environmental destruction. On the other hand, subjective norms, that is, the social pressure felt by that person, are affected by normative beliefs about that behavior, for example, a person knows that his/her friend perceives green buying behavior as an altruistic behavior.