Journal Articles

Hall, N-A, Chadwick, A, Vaccari, C (2023) Online misinformation and everyday ontological narratives of social distinction, Media, Culture and Society, 46(3), pp.572-590, ISSN: 0163-4437. DOI: 10.1177/01634437231211678.

Chadwick, A, Vaccari, C, Hall, N-A (2023) What explains the spread of misinformation in online personal messaging networks? Exploring the role of conflict avoidance, Digital Journalism, 12(5), pp.574-593, ISSN: 2167-0811. DOI: 10.1080/21670811.2023.2206038.

Chadwick, A, Hall, N-A, Vaccari, C (2023) Misinformation rules!? Could “group rules” reduce misinformation in online personal messaging?, New Media and Society, 27(1), pp.106-126, ISSN: 1461-4448. DOI: 10.1177/14614448231172964.

Ross, ARN, Vaccari, C, Chadwick, A (2022) Russian meddling in U.S. elections: How news of disinformation’s impact can affect trust in electoral outcomes and satisfaction with democracy, Mass Communication and Society, 25(6), pp.786-811, ISSN: 1520-5436. DOI: 10.1080/15205436.2022.2119871.

Vaccari, C, Chadwick, A, Kaiser, J (2022) The campaign disinformation divide: believing and sharing news in the 2019 UK general election, Political Communication, 40(1), pp.4-23, ISSN: 1058-4609. DOI: 10.1080/10584609.2022.2128948.

Chadwick, A, Vaccari, C, Kaiser, J (2022) The amplification of exaggerated and false news on social media: the roles of platform use, motivations, affect, and ideology, American Behavioral Scientist, 69(2), pp.113-130, ISSN: 0002-7642. DOI: 10.1177/00027642221118264.

Vaccari, C (2022) When journalists run for office: the effects of journalist-candidates on citizens’ populist attitudes and voting intentions, International Journal of Communication, 16, pp.3422-3442, ISSN: 1932-8036.

Kaiser, J, Vaccari, C, Chadwick, A (2022) Partisan blocking: Biased responses to shared misinformation contribute to network polarization on social media, Journal of Communication, 72(2), pp.214-240, ISSN: 0021-9916. DOI: 10.1093/joc/jqac002.

Vaccari, C (2021) The International and Post-disciplinary Journey of Political Communication: Reflections on “Media-centric and Politics-centric Views of Media and Democracy: A Longitudinal Analysis of Political Communication and the International Journal of Press/Politics”, Political Communication: an international journal, ISSN: 1058-4609. DOI: 10.1080/10584609.2021.1966599.

Freeman, D, Lambe, S, Yu, L-M, Freeman, J, Chadwick, A, Vaccari, C, Waite, F, Rosebrock, L, Petit, A, Vanderslott, S, Lewandowsky, S, Larkin, M, Innocenti, S, McShane, H, Pollard, AJ, Loe, BS (2021) Injection fears and COVID-19 vaccine hesitancy, Psychological Medicine, 53(4), pp.1185-1195, ISSN: 0033-2917. DOI: 10.1017/s0033291721002609.

Freeman, D, Loe, BS, Yu, L-M, Freeman, J, Chadwick, A, Vaccari, C, Shanyinde, M, Harris, V, Waite, F, Rosebrock, L, Petit, A, Vanderslott, S, Lewandowsky, S, Larkin, M, Innocenti, S, Pollard, AJ, McShane, H, Lambe, S (2021) Effects of different types of written vaccination information on COVID-19 vaccine hesitancy in the UK (OCEANS-III): a single-blind, parallel-group, randomised controlled trial, The Lancet Public Health, 6(6), ISSN: 2468-2667. DOI: 10.1016/s2468-2667(21)00096-7.

Ceccobelli, D and Vaccari, C (2021) A virus in the hybrid media system: How the Conte government communicated the coronavirus crisis, Contemporary Italian Politics, 13(2), pp.259-274, ISSN: 2324-8823. DOI: 10.1080/23248823.2021.1906529.

Chadwick, A, Kaiser, J, Vaccari, C, Freeman, D, Lambe, S, Loe, BS, Vanderslott, S, Lewandowsky, S, Conroy, M, Ross, ARN, Innocenti, S, Pollard, AJ, Waite, F, Larkin, M, Rosebrock, L, Jenner, L, McShane, H, Giubilini, A, Petit, A, Yu, L-M (2021) Online social endorsement and Covid-19 vaccine hesitancy in the United Kingdom, Social Media and Society, 7(2), pp.1-17, ISSN: 2056-3051. DOI: 10.1177/20563051211008817.

Freeman, D, Loe, BS, Chadwick, A, Vaccari, C, Waite, F, Rosebrock, L, Jenner, L, Petit, A, Lewandowsky, S, Vanderslott, S, Innocenti, S, Larkin, M, Giubilini, A, Yu, L-M, McShane, H, Pollard, AJ, Lambe, S (2020) COVID-19 vaccine hesitancy in the UK: the Oxford coronavirus explanations, attitudes, and narratives survey (Oceans) II, Psychological Medicine, 52(14), pp.3127-3141, ISSN: 0033-2917. DOI: 10.1017/S0033291720005188.

Miller, ML and Vaccari, C (2020) Digital Threats to Democracy: Comparative Lessons and Possible Remedies, International Journal of Press/Politics, 25(4), 2, ISSN: 1940-1612. DOI: 10.1177/1940161220922323.

Mazzoleni, G and Vaccari, C (2020) 20 years of political communication scholarship: Accomplishments, changes, and challenges, Comunicazione politica, 2020(1), pp.5-20, ISSN: 1594-6061. DOI: 10.3270/96419.

Vaccari, C, Smets, K, Heath, O (2019) The United Kingdom 2017 election: polarisation in a split issue space, West European Politics, 43(3), pp.587-609, ISSN: 1743-9655. DOI: 10.1080/01402382.2019.1655961.

Zilinsky, J, Vaccari, C, Nagler, J, Tucker, JA (2019) Don’t Republicans Tweet Too? Using Twitter to Assess the Consequences of Political Endorsements by Celebrities, Perspectives on Politics, pp.1-17, ISSN: 1537-5927. DOI: 10.1017/s1537592719002603.

Vaccari, C (2019) Editorial, INTERNATIONAL JOURNAL OF PRESS-POLITICS, 24(1), pp.3-6, ISSN: 1940-1612. DOI: 10.1177/1940161218809819.

Vaccari, C and Valeriani, A (2018) Digital Political Talk and Political Participation: Comparing Established and Third Wave Democracies, SAGE Open, 8(2), DOI: 10.1177/2158244018784986.

Vaccari, C and Valeriani, A (2018) Dual screening, public service broadcasting, and political participation in eight Western democracies, International Journal of Press/Politics, 23(3), pp.367-388, ISSN: 1940-1612. DOI: 10.1177/1940161218779170.

Chadwick, A, Vaccari, C, O'Loughlin, B (2018) Do tabloids poison the well of social media? Explaining democratically dysfunctional news sharing, New Media and Society, 20(11), pp.4255-4274, ISSN: 1461-4448. DOI: 10.1177/1461444818769689.

Tucker, J, Guess, A, Barbera, P, Vaccari, C, Siegel, A, Sanovich, S, Stukal, D, Nyhan, B (2018) Social Media, Political Polarization, and Political Disinformation: A Review of the Scientific Literature, SSRN Electronic Journal, DOI: 10.2139/ssrn.3144139.

Vaccari, C and Wagemann, C (2018) Outsiders looking in and insiders looking out: A comparative study of newspaper coverage of Italian-German relationships in the 2013 elections, Contemporary Italian Politics, 10(1), pp.76-95, ISSN: 2324-8823. DOI: 10.1080/23248823.2018.1435198.

Valeriani, A and Vaccari, C (2017) Political talk on mobile instant messaging services: a comparative analysis of Germany, Italy, and the UK, Information, Communication and Society, 21(11), pp.1715-1731, ISSN: 1369-118X. DOI: 10.1080/1369118X.2017.1350730.

Chadwick, A, O'Loughlin, B, Vaccari, C (2017) Why people dual screen political debates and why it matters for democratic engagement, Journal of Broadcasting & Electronic Media, 61(2), pp.220-239, ISSN: 0883-8151. DOI: 10.1080/08838151.2017.1309415.

O'Loughlin, B, Vaccari, C, Ozgul, BA, Dennis, J (2017) Twitter and Global Political Crises, Middle East Journal of Culture and Communication, 10(2-3), pp.175-203, ISSN: 1873-9857. DOI: 10.1163/18739865-01002006.

Vaccari, C (2016) Online Mobilization in Comparative Perspective: Digital Appeals and Political Engagement in Germany, Italy, and the United Kingdom, Political Communication, 34(1), pp.69-88, ISSN: 1058-4609. DOI: 10.1080/10584609.2016.1201558.

Vaccari, C, Valeriani, A, Barberá, P, Jost, JT, Nagler, J, Tucker, JA (2016) Of Echo Chambers and Contrarian Clubs: Exposure to Political Disagreement Among German and Italian Users of Twitter, Social Media and Society, 2(3), ISSN: 2056-3051. DOI: 10.1177/2056305116664221.

Vaccari, C and Valeriani, A (2016) Party Campaigners or Citizen Campaigners? How Social Media Deepen and Broaden Party-Related Engagement, International Journal of Press/Politics, 21(3), pp.294-312, ISSN: 1940-1612. DOI: 10.1177/1940161216642152.

Campus, D, Ceccarini, L, Vaccari, C (2015) What a Difference a Critical Election Makes: Social Networks and Political Discussion in Italy Between 2008 and 2013, International Journal of Public Opinion Research, 27(4), pp.588-601, ISSN: 0954-2892. DOI: 10.1093/ijpor/edv045.

Valeriani, A and Vaccari, C (2015) Accidental exposure to politics on social media as online participation equalizer in Germany, Italy, and the United Kingdom, New Media and Society, 18(9), pp.1857-1874, ISSN: 1461-4448. DOI: 10.1177/1461444815616223.

Vaccari, C, Chadwick, A, O'Loughlin, B (2015) Dual screening the political: media events, social media, and citizen engagement, Journal of Communication, 65(6), pp.1041-1061, ISSN: 0021-9916. DOI: 10.1111/jcom.12187.

Vaccari, C (2015) The features, impact and legacy of Berlusconi's campaigning techniques, language and style, Modern Italy, 20(1), pp.25-39, ISSN: 1353-2944. DOI: 10.1080/13532944.2014.985583.

Vaccari, C, Valeriani, A, Barbera, P, Bonneau, R, Jost, JT, Nagler, J, Tucker, JA (2015) Political expression and action on social media: Exploring the relationship between lower- and higher-threshold political activities among Twitter users in Italy, Journal of Computer-Mediated Communication, 20(2), pp.221-239, DOI: 10.1111/jcc4.12108.

Vaccari, C (2014) You’ve Got (No) Mail: How Parties and Candidates Respond to E-mail Inquiries in Western Democracies, Journal of Information Technology & Politics, 11(2), pp.245-258, ISSN: 1933-1681. DOI: 10.1080/19331681.2014.899536.

VACCARI, C and MORINI, M (2014) The Power of Smears in Two American Presidential Campaigns, Journal of Political Marketing, 13(1-2), pp.19-45, ISSN: 1537-7857. DOI: 10.1080/15377857.2014.866021.

Nielsen, RK and Vaccari, C (2013) Do People "Like" Candidates on Facebook? Not Really: Large-Scale Direct Candidate-to-Voter Online Communication as an Outlier Phenomenon, International Journal of Communication, pp.2333-2356, ISSN: 1932-8036.

Vaccari, C and Nielsen, RK (2013) What Drives Politicians' Online Popularity? An Analysis of the 2010 U.S. Midterm Elections, Journal of Information Technology & Politics, 10(2), pp.208-222, ISSN: 1933-1681. DOI: 10.1080/19331681.2012.758072.

Vaccari, C (2013) From echo chamber to persuasive device? Rethinking the role of the Internet in campaigns, New Media & Society, 15(1), pp.109-127, ISSN: 1461-4448. DOI: 10.1177/1461444812457336.

Vaccari, C and Valeriani, A (2013) Follow the leader! Direct and indirect flows of political communication during the 2013 Italian general election campaign, New Media and Society, 17(7), pp.1025-1042, ISSN: 1461-4448. DOI: 10.1177/1461444813511038.

Vaccari, C, Valeriani, A, Barberá, P, Bonneau, R, Jost, JT, Nagler, J, Tucker, J (2013) Social media and political communication: A survey of twitter users during the 2013 Italian general election, Italian Political Science Review, 43(3), pp.381-410, ISSN: 0048-8402. DOI: 10.1426/75245.

Vaccari, C (2013) A tale of two e-parties: Candidate websites in the 2008 US presidential primaries, Party Politics, 19(1), pp.19-40, ISSN: 1354-0688. DOI: 10.1177/1354068810391287.

Vaccari, C (2011) THE NEWS MEDIA AS NETWORKED POLITICAL ACTORS: How Italian media are reclaiming political ground by harnessing online participation, Information Communication and Society, 14(7), pp.981-997, ISSN: 1369-118X. DOI: 10.1080/1369118X.2011.572984.

Vaccari, C (2010) “Technology Is a Commodity”: The Internet in the 2008 United States Presidential Election, Journal of Information Technology & Politics, 7(4), pp.318-339, ISSN: 1933-1681. DOI: 10.1080/19331681003656664.

Campus, D, Pasquino, G, Vaccari, C (2008) Social Networks, Political Discussion, and Voting in Italy: A Study of the 2006 Election, Political Communication, 25(4), pp.423-444, ISSN: 1058-4609. DOI: 10.1080/10584600802427039.

Vaccari, C (2008) From the air to the ground: the internet in the 2004 US presidential campaign, New Media & Society, 10(4), pp.647-665, ISSN: 1461-4448. DOI: 10.1177/1461444808093735.

Vaccari, C (2008) Surfing to the Élysée: The Internet in the 2007 French Elections, French Politics, 6(1), pp.1-22, ISSN: 1476-3419. DOI: 10.1057/palgrave.fp.8200139.

Vaccari, C (2008) Research Note: Italian Parties' Websites in the 2006 Elections, European Journal of Communication, 23(1), pp.69-77, ISSN: 0267-3231. DOI: 10.1177/0267323107085839.

Vaccari, C (2007) Le elezioni di metà mandato negli Stati Uniti del 2006: un refrendum contro Bush e per il governo diviso, Quaderni dell'Osservatorio elettorale QOE - IJES , 57(1), pp.85-120, ISSN: 0392-6753. DOI: 10.36253/qoe-10225.

Conferences

Castano, S, Ferrara, A, Gallinucci, E, Golfarelli, M, Montanelli, S, Mosca, L, Rizzi, S, Vaccari, C (2018) SABINE: A multi-purpose dataset of semantically-annotated social content. In International Semantic Web Conference, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Monterey, CA, USA, pp.70-85, ISBN: 9783030006679. DOI: 10.1007/978-3-030-00668-6_5.

Books

Vaccari, C and Valeriani, A (2021) Outside the Bubble Social Media and Political Participation in Western Democracies, Oxford University Press, ISBN: 9780190858476.

Vaccari, C (2013) Digital politics in western democracies: A comparative study, Johns Hopkins University Press, ISBN: 9781421411194.

Chapters

Ritchie, N, Wring, D, Rafter, K, Vaccari, C (2022) A Gulf Across the Irish Sea? The European Election Campaigns in the United Kingdom and the Republic of Ireland. In 2019 European Electoral Campaign in the Time of Populism and Social Media, pp.159-178, DOI: 10.1007/978-3-030-98993-4_9.

Ross, ARN, Chadwick, A, Vaccari, C (2021) Digital media and the proliferation of public opinion cues online: biases and vulnerabilities in the new attention economy. In Morrison, J, Birks, J, Berry, M (ed) The Routledge Companion to Political Journalism, Routledge, pp.241-251, ISBN: 9780367248222. DOI: 10.4324/9780429284571.

Ross, ARN, Chadwick, A, Vaccari, C (Accepted for publication) Digital Media and the Proliferation of Public Opinion Cues Online: Biases and Vulnerabilities in the New Attention Economy. In Morrison, J, Birks, J, Berry, M (ed) The Routledge Companion to Political Journalism, Routledge, 22, ISBN: 9780367248222.

Armitage, R and Vaccari, C (2021) Misinformation and disinformation. In Routledge Companion to Media Disinformation and Populism, pp.38-48, DOI: 10.4324/9781003004431-5.

Deacon, D, Wring, D, Smith, D, Vaccari, C (2020) Here, There and Everywhere: Brexit and the Mainstream News Coverage During the 2019 General Election. In Mair, J, Clark, T, Fowler, N, Snoddy, R, Tait, R (ed) Brexit, Boris and the Media, Theschoolbook.com, pp.1-14, ISBN: 9781845497644.

Barberá, P, Vaccari, C, Valeriani, A (2017) Social Media, Personalization of News Reporting, and Media Systems' Polarization in Europe. In Barisione, M and Michailidou, A (ed) Social Media and European Politics Rethinking Power and Legitimacy in the Digital Era, Palgrave Macmillan, pp.25-52, ISBN: 9781137598905.

Mosca, L, Vaccari, C, Valeriani, A (2016) An internet-fuelled party? The movimento 5 stelle and the web. In Beppe Grillo S Five Star Movement Organisation Communication and Ideology, pp.127-151, DOI: 10.4324/9781315569062-12.

Vaccari, C (2015) Blogging, Political. In Mazzoleni, G (ed) The International Encyclopedia of Political Communication, 3 Volume Set, John Wiley & Sons, pp.65-72, ISBN: 9781118290750.

Mosca, L, Vaccari, C, Valeriani, A (2015) How to Select Citizen Candidates: The Five Star Movement's Online Primaries and their Implications'. In De Petris, A and Poguntke, T (ed) Anti-Party Parties in Germany and Italy, LUISS University Press, pp.165-192, ISBN: 978-88-6856-028-7.

Vaccari, C (2015) A Europe wide web?: Political parties' websites in the 2009 European parliament elections. In Solo, A (ed) Political Campaigning in the Information Age, IGI Global, pp.2078-2099, ISBN: 9781466683600. DOI: 10.4018/978-1-4666-8358-7.ch107.

Mosca, L, Vaccari, C, Valeriani, A (2015) An internet-fuelled party? The movimento 5 stelle and the web. In Beppe Grillo S Five Star Movement Organisation Communication and Ideology, pp.127-152.

Vaccari, C (2013) City Hall 2.0?: Italian local executive officials’ presence and popularity on Web 2.0 platforms. In Politics and the Internet in Comparative Context Views from the Cloud, pp.169-185, DOI: 10.4324/9780203798331.

Vaccari, C (2012) The news media as networked political actors: How italian media are reclaiming political ground by harnessing online participation. In Social Media and Democracy Innovations in Participatory Politics, pp.77-90, DOI: 10.4324/9780203126974.

Vaccari, C (2012) Online participation in Italy: Contextual influences and political opportunities. In Digital Media and Political Engagement Worldwide: A Comparative Study, Cambridge University Press, pp.138-159, ISBN: 9781139108881. DOI: 10.1017/CBO9781139108881.008.

Vaccari, C (2012) The news media as networked political actors: How Italian media are reclaiming political ground by harnessing online participation. In Social Media and Democracy Innovations in Participatory Politics, pp.77-90, DOI: 10.4324/9780203126974-12.

Vaccari, C (2010) Missed Opportunities: The Debate on Immigrants' Voting Rights in Italian Newspapers and Television. In Ardizzoni, M and Ferrari, C (ed) Beyond Monopoly Globalization and Contemporary Italian Media, Lexington Books, pp.203-224, ISBN: 9780739128510.

Grandi, R and Vaccari, C (2009) Election Campaigning and the New Media. In Albertazzi, Brook, Ross, Rothenberg, (ed) Resisting the Tide Cultures of Opposition Under Berlusconi (2001-06), Continuum, pp.46-56, ISBN: 9780826492913.

Vaccari, C (2009) Web Challenges to Berlusconi: An Analysis of Oppositional Sites. In Albertazzi, Brook, Ross, Rothenberg, (ed) Resisting the Tide Cultures of Opposition Under Berlusconi (2001-06), Continuum, pp.135-147, ISBN: 9780826492913.

Vaccari, C (2006) Meet "Silvio" and "Romano": Political Communication as Personal Storytelling. In Frosini, J and Pasquino, G (ed) For a Fistful of Votes: The 2006 Italian Elections, CLUEB, pp.75-101, ISBN: 9788849126877.

Reports

Hall, N-A, Lawson, B, Vaccari, C, Chadwick, A (2023) Beyond quick fixes: How users make sense of misinformation warnings on personal messaging, pp.1-42, Online Civic Culture Centre, Loughborough University.

Chadwick, A, Vaccari, C, Hall, N-A (2022) Covid vaccines and online personal messaging: the challenge of challenging everyday misinformation.

Chadwick, A and Vaccari, C (2019) News sharing on UK social media: misinformation, disinformation, and correction.

Datasets

Ross, ARN, Vaccari, C, Chadwick, A (2023) Supplementary information files for Russian meddling in U.S. elections: How news of disinformation’s impact can affect trust in electoral outcomes and satisfaction with democracy, DOI: 10.17028/rd.lboro.21904452.

Vaccari, C, Chadwick, A, Kaiser, J (2022) Supplementary information files for The Campaign Disinformation Divide: Believing and Sharing News in the 2019 UK General Election, DOI: 10.17028/rd.lboro.21395127.

Chadwick, A, Vaccari, C, Kaiser, J (2022) Supplementary information for The amplification of exaggerated and false news on social media: the roles of platform use, motivations, affect, and ideology, DOI: 10.17028/rd.lboro.21270702.

Chadwick, A, Kaiser, J, Vaccari, C, Freeman, D, Lambe, S, Loe, BS, Vanderslott, S, Lewandowsky, S, Conroy, M, Ross, ARN, Innocenti, S, Pollard, AJ, Waite, F, Larkin, M, Rosebrock, L, Jenner, L, McShane, H, Giubilini, A, Petit, A, Yu, L-M (2021) Supplementary Information Files for: Online social endorsement and Covid-19 vaccine hesitancy in the United Kingdom, DOI: 10.17028/rd.lboro.16732807.

Freeman, D, Loe, BS, Chadwick, A, Vaccari, C, Waite, F, Rosebrock, L, Jenner, L, Petit, A, Lewandowsky, S, Vanderslott, S, Innocenti, S, Larkin, M, Giubilini, A, Yu, L-M, McShane, H, Pollard, AJ, Lambe, S (2021) Supplementary Information Files for Covid-19 vaccine hesitancy in the UK: The Oxford Coronavirus explanations, attitudes, and narratives survey (OCEANS) II, DOI: 10.17028/rd.lboro.13573595.

Freeman, D, Loe, BS, Chadwick, A, Vaccari, C, Waite, F, Rosebrock, L, Jenner, L, Petit, A, Lewandowsky, S, Vanderslott, S, Innocenti, S, Larkin, M, Giubilini, A, Yu, L-M, McShane, H, Pollard, AJ, Lambe, S (2021) Supplementary Information Files for Covid-19 vaccine hesitancy in the UK: The Oxford Coronavirus explanations, attitudes, and narratives survey (OCEANS) II, DOI: 10.17028/rd.lboro.13573811.

Other

Vaccari, C (2022) Editorial. DOI: 10.1177/19401612211052940.

Vaccari, C (2020) Editorial. DOI: 10.1177/1940161220943440.

Vaccari, C and Chadwick, A (2020) ‘Deepfakes’ are here. These deceptive videos erode trust in all news media, Washington Post, May 28, 2020.

Vaccari, C (2019) Editorial. DOI: 10.1177/1940161219869063.