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Grounded in Media System Dependency theory, this work investigates the impact of new media on political efficacy. It suggests that dependence on online resources affects people’s perceptions about the democratic potential of the Internet. Using structural equation modeling, the study tests the relationship between political attitudes and the perceived utility of the Web. The analysis employs measures that take into consideration the facilitating role of communication technologies. Results indicate that online political efficacy is associated with individual views about the comprehensiveness and credibility of new media. Efficacy is also linked to the perceived ability of online tools to aid the maintenance of ideologically homogenous social networks. The intensity of Internet dependency relations is found to be predicted by the perceived comprehensiveness – but not credibility – of online news.

This chapter explains how SYRIZA managed to build international support up to the January 2015 election with very limited resources, and against mainstream coverage, by relying essentially on grassroots movements and social media. It also shows how, approaching to power, SYRIZA's political, but also communication strategy, became more institutionalised and relied less on grassroots campaigning. Methodologically, our research is based on the following research techniques: First, interviews with activists and members of the party as well as observations inside its social media team. Second, the study of online content and data from 2006 to 2015. Overall, this chapter shows that SYRIZA's campaign on the Internet relied mainly on alternative media activists who acquired a specific savoir faire and developed international networks during the intense antiausterity social movement that took place in Greece between 2010 and 2013. The campaign was also supported by young experts from the private sector that contributed on a voluntary basis. Nevertheless, its success was mainly due to the European political context and the opportunities it offered to the radical Left, rather than the communication strategy, which in any case suffered from a lack of means and from a somewhat chaotic (non) organisation.

Uncertainty-identity theory serves as our guiding theoretical framework to explore subjective uncertainty, especially uncertainty about self and identity, and the ways in which communication within groups provides valuable social identity information to group members as a means to manage subjective uncertainty.

We review and synthesize research in communication science and social identity theory, specifically uncertainty-identity theory, to compare diverse understandings of uncertainty and the identity-shaping function of communication within groups.

Uncertainty inherent in dyadic interactions has received extensive attention in communication science. However, the identity-defining function of communication that flows within and between groups as a means to resolving uncertainty about subjectively important matters has received little attention in both social psychology and communication science.

We explore how communication that flows from in-group sources (e.g., leaders) serves to shape a shared reality and identity for group members while providing a framework for self-definition. We propose an agenda for future research that would benefit from an articulation of the importance of communication in the shaping and management of identity-uncertainty.

Uncertainty arousing rhetoric by influential in-group sources, such as leaders and the media can have serious implications for intergroup relations, as uncertain individuals seek distinctive and tight-knit groups and autocratic leaders under conditions of heightened uncertainty. The role that communication plays in shaping clear and distinct identities as a panacea for identity-uncertainty has implications for the intragroup normative structure of the group and for intergroup relations.

Organizational legitimacy is a central concept in institutional theory and in the more recent stream of communicative institutionalism. Within this scholarship, there exists an elaborated understanding of how macro-level actors, such as news media, influence individual judgments at the micro-level through a top-down communication process. However, little is known about the upward process by which individual propriety judgments influence validity judgments of news media at the macro-level. In this paper, we propose that this upward process of the legitimacy loop is facilitated by the degree to which expressed propriety judgments by individuals create thematic broadness, which bridges stand-alone conversations. Through a study investigating a post-scandal phase in the financial sector, we show how propriety judgments in social media become pre-validated at the meso-level prior to their validation by news media at the macro-level. The presented theoretical framework and empirical insights based on time-series regression analysis provide new knowledge about the multilevel process of organizational legitimacy formation in a digital age and extend our understanding of how a consensus is revealed at the meso-level.