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Inspired by the increasing popularity of advertising on social media, and especially on social network sites (SNSs), the aim of this study is to give insight into the effectiveness of SNS advertising. The first experimental study compares consumer responses to advertising on SNSs and television (TV) and demonstrates that while TV campaigns are evaluated more positively, SNS campaigns result in more favourable cognitive responses. Moreover, the persuasive intent of SNS campaigns is less recognized than for TV campaigns. Since SNSs are often combined with traditional media in advertising campaigns, the second study examines whether campaigns combining TV and SNSs lead to so-called synergy effects. Results showed that this was not the case: single-medium and multimedia campaigns were equally effective. The third study examines the role of perceived persuasive intent in this relationship and tests whether there is an indirect effect of type of campaign (multimedia or single-medium) on consumer responses via perceived persuasive intent. Results show that SNS–TV campaigns are perceived as less persuasive than SNS-only and TV-only campaigns, resulting in more favourable campaign and brand responses. In sum, the article provides empirical evidence for the value of integrating social media with traditional media in advertising campaigns.

Abstract. This study examines the extent to which interactive communication on political websites affects various forms of citizens' involvement in politics, and the moderating role of political cynicism in this relationship. Based on the outcomes of a laboratory experiment with a single-factor (interactivity: low vs. medium vs. high interactivity) between-subjects design, we found that interactive political websites have a positive effect on citizen involvement, and this effect is particularly present for websites with high levels of interactivity. We also demonstrate that interactivity effects are, to some extent, contingent on citizens' political cynicism. For higher levels of political cynicism, deviations in the level of interactivity make less of a difference in their impact on political involvement.

In the time since the rise of the Internet, it has often been claimed that it has the potential to contribute to the quality of democracy by fostering citizens' involvement in politics. So far, empirical evidence regarding this purported effect has been mixed, and many questions about the consequences of specific forms of political Internet use (PIU) have remained unanswered. This study expands the knowledge about the relation between PIU and political involvement by examining the effect of active and passive forms of PIU on citizens' political involvement: more specifically, interest and voter turnout during election times. The results obtained from a panel study of a representative sample of the Dutch population ( N = 985) reveal a positive relation between particular forms of PIU on the one hand and voter turnout and political interest on the other hand. In addition, for two specific forms of PIU, the positive effect on voter turnout is more prevalent for citizens who exhibit lower levels of political interest.

Political parties and politicians increasingly use the possibilities of the Internet to communicate interactively with citizens and vice versa. The Internet also offers opportunities for individual politicians to profile themselves. These developments are often said to bring politics closer to citizens, increasing their political engagement in politics. Empirical evidence for such claims is, however, scarce. In a scenario experiment and a laboratory experiment using real-world websites, the authors examine whether more personalized online communication (a focus on individual politicians) and the use of interactive features increase political involvement among citizens. The results from both studies demonstrate that both highly interactive and personalized online communication do increase citizens' political involvement. Moreover, it was also found that political personalization positively moderates the effect of interactivity on political involvement, meaning that the effects of interactivity are even stronger in a personalized setting.

This article presents two studies examining the effects of disclosing online native advertising (i.e., sponsored content in blogs) on people's brand attitude and purchase intentions. To investigate the mechanisms underlying these effects, we integrated resistance theories with the persuasion knowledge model. We theorize that disclosures activate people's persuasion knowledge, which in turn evokes resistance strategies that people use to cope with the persuasion attempt made in the blog. We tested our predications with two experiments ( N = 118 and N = 134). We found that participants indeed activated persuasion knowledge in response to disclosures, after which they used both cognitive (counterarguing) and affective (negative affect) resistance strategies to decrease persuasion. The obtained insights do not only advance our theoretical understanding of how disclosures of sponsored blogs affect persuasion but also provide valuable insights for legislators, advertisers, and bloggers.

This article presents two studies examining the effects of disclosing online native advertising (i.e., sponsored content in blogs) on people's brand attitude and purchase intentions. To investigate the mechanisms underlying these effects, we integrated resistance theories with the persuasion knowledge model. We theorize that disclosures activate people's persuasion knowledge, which in turn evokes resistance strategies that people use to cope with the persuasion attempt made in the blog. We tested our predications with two experiments (N = 118 and N = 134). We found that participants indeed activated persuasion knowledge in response to disclosures, after which they used both cognitive (counterarguing) and affective (negative affect) resistance strategies to decrease persuasion. The obtained insights do not only advance our theoretical understanding of how disclosures of sponsored blogs affect persuasion but also provide valuable insights for legislators, advertisers, and bloggers.