According to the social impact theory, the more important a group is, the closer the distance is between the group and oneself; therefore, the more likely it is for one to conform to the group’s normative pressures [29]. This kind of social pressure is considered as normative social influence [31]. Normative social influence refers to conformity to the expectations of another person or group and creates social pressure for people to adopt a product or a service because people not adopting the product may be treated as ‘old fashioned’ regardless of the individual’s preference toward the product [27]. The normative social influence is reflected in individuals’ attempts to comply with the expectations of others to achieve rewards or avoid punishments, and it operates through the process of compliance [4]. For example, the greatest normative social influence is usually exerted with primary reference groups like family [12].