Instagram is a social networking site (SNS) that facilitate the social-comparison and feedback-seeking (SCFS) processes, which are particularly relevant during adolescence. Likes represent numeric evaluative feedback and seem to be considered as a form of social reward. In this research we examine some psychosocial factors that could influence the Instagram usage intensity (i.e. SCFS and motivations) and analyze the moderating role of SCFS in the relationship between the number of likes on posts and adolescents' emotions. The sample consisted of 182 adolescent students aged between 13 and 18 years (M = 15.35 years, SD = 1.11). The results show that the social interaction, storage, and gossip motivations mediate the relationship between SCFS and Instagram usage intensity, and that the influence of the number of likes on emotions depended on the degree of SCFS. The discussion of the findings emphasizes that likes have a special social and affective relevance for adolescents with high SCFS, who might become more emotionally susceptible to the feedback they received from their audience on Instagram. This research could be a precedent to future research and the development of intervention programs based on the responsible use of SNSs in an educative context.
Keywords: Social network sites; adolescence; emotional state; feedback-seeking; social comparison.