The study explores the effects of COVID-19 vaccine fake news on social media from the perspective of the elaboration likelihood model (ELM). The research model theorizes that factors of the central route and factors of the peripheral route influence panic vaccination intention through the third-person effect of fake news, personal norm, and the individual's attitude toward panic vaccination (i.e., the vaccination equivalent of “panic buying”). Data were collected via an online survey with 409 valid responses. The study applies partial least squares (PLS) structural equation modeling (SEM) to test the hypotheses. The findings have theoretical and practical implications and provide insights to help reduce the spread of fake news on social media during an outbreak to better ensure that people are not misled by fake news.

Research analyzing the growing, worrisome phenomenon of cyberbullying in social network sites (SNSs) tends to adopt a cognitive perspective. This study instead investigates SNS envy, an essential emotion often experienced by users, and its relationship with cyberbullying intentions. The authors apply appraisal theory of emotion as a framework to conceptualize the effects of SNS envy, then propose two competing views: a direct effect premised in general strain theory and an indirect effect rooted in moral disengagement theory. The examinations of these competing views use survey data gathered from Facebook. The results support the indirect but not the direct effect, suggesting that envy influences cyberbullying intentions through moral disengagement. This study explicates how envious users rationalize their cyberbullying behaviors by cognitively reinterpreting existing perceptions of the advantages exhibited by envied others in a SNS, which reveals the importance of considering negative emotions to explain the unsettling cyberbullying phenomenon more fully.

User loyalty or continued use is critical to the survival and development of any website. Focusing on the social network services (SNSs) context, this study proposes a research model for investigating individuals’ use motivations and the moderating role of habit with regard to gratification and continuance intention. This research integrates two influential media communication theories, media system dependency (MSD) and uses and gratifications, to examine SNSs-related behaviors. To comprehend online users’ motivations in depth, three motivations derived from MSD (understanding, orientation and play dependency relations) are operationalized as reflective, second-order constructs. The three motivations are theorized to affect parasocial interaction positively, and parasocial interaction is hypothesized to positively affect the gratification that individuals derive from SNSs usage. Furthermore, this study hypothesizes that gratification positively affects individuals’ continuance intention. Finally, we theorize that habit moderates the impact of gratification on continuance intention. Data collected from 657 Facebook users provide strong support for all six hypotheses. The results indicate that individuals’ motivations (i.e., the understanding, orientation and play dependency relations) positively affect parasocial interaction, which in turn has a positive effect on gratification, and subsequently continuance intention. In addition, the results show that habit has a small but negative moderating effect on the relationship between gratification and continuance intention. Implications for theory and practice are discussed, and suggestions are made for future research.