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The more often a message is reshared, the wider the reach of the message and potential influence it may have on shaping people\u2019s opinions to get vaccinated or not. We used a negative binomial regression to investigate whether a message\u2019s linguistic characteristics (degree of concreteness, emotional arousal, and sentiment) and user characteristics (political ideology and number of followers) may influence users\u2019 decisions to reshare tweets related to the COVID-19 vaccine. We analyzed US English-language tweets related to the COVID-19 vaccine between May 2020 and October 2021 (\n            <jats:italic>N<\/jats:italic>\n            = 236,054).\n          <\/jats:p>\n          <jats:p>Tweets with positive and high-arousal words were more often retweeted than negative, low-arousal tweets. Tweets with abstract words were more often retweeted than tweets with concrete words. In addition, while Liberal users were more likely to have tweets with a positive sentiment reshared. Conservative users were more likely to have tweets with a negative sentiment reshared. Our results can inform public health messaging on how to best phrase vaccine information to impact engagement and information resharing, and potentially persuade a wider set of people to get vaccinated.<\/jats:p>","DOI":"10.1145\/3637876","type":"journal-article","created":{"date-parts":[[2024,1,30]],"date-time":"2024-01-30T12:16:05Z","timestamp":1706616965000},"page":"1-23","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Wording Matters: The Effect of Linguistic Characteristics and Political Ideology on Resharing of COVID-19 Vaccine Tweets"],"prefix":"10.1145","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9716-0147","authenticated-orcid":false,"given":"Judith","family":"Borghouts","sequence":"first","affiliation":[{"name":"University of California Irvine, Irvine, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1186-4803","authenticated-orcid":false,"given":"Yicong","family":"Huang","sequence":"additional","affiliation":[{"name":"University of California Irvine, Irvine, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3232-9743","authenticated-orcid":false,"given":"Suellen","family":"Hopfer","sequence":"additional","affiliation":[{"name":"University of California Irvine, Irvine, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8015-6870","authenticated-orcid":false,"given":"Chen","family":"Li","sequence":"additional","affiliation":[{"name":"University of California Irvine, Irvine, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2492-2424","authenticated-orcid":false,"given":"Gloria","family":"Mark","sequence":"additional","affiliation":[{"name":"University of California Irvine, Irvine, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2024,9,19]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.2018.304947"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1377\/HLTHAFF.2015.1092"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/S11109-016-9338-8\/TABLES\/12"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1093\/pan\/mpu011"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1177\/0956797615594620"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.18637\/jss.v067.i01"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1037\/1089-2680.5.4.323"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1509\/JMR.10.0353\/FORMAT\/EPUB"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1177\/1359105309353647"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1177\/19485506211055295"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.5555\/1717171"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.2196\/21978"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1093\/pnasnexus\/pgad013"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1037\/xge0000673.supp"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.3758\/s13428-654013-0403-5"},{"key":"e_1_3_2_17_2","volume-title":"Business Research Methods and Statistics Using SPSS","author":"Burns R. 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