Hornik, Robert
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Publication Automated Content Analysis to Quantify Valence, Themes, and Norms Mentioned in Tobacco and E-cigarette Coverage across Two Social Media Sources(2019-01-01) Gibson, Laura; Williams, Sharon; Siegel, Leeann; Lee, Chae; Volinsky, Allyson; Hornik, RobertPublication Automated Content Analysis to Quantify Valence, Themes, and Norms Mentioned in Tobacco and E-cigarette Coverage across Two Social Media Sources (expanded version)(2019-01-01) Gibson, Laura; Williams, Sharon; Siegel, Leeann; Lee, Chae; Volinsky, Allyson; Hornik, RobertPublication Automated Content Analysis to Quantify Valence, Themes, and Norms Mentioned in Tobacco and E-cigarette Coverage across Four Media Sources (expanded version)(2019-01-01) Gibson, Laura; Williams, Sharon; Siegel, Leeann; Lee, Chae; Volinsky, Allyson; Hornik, RobertPublication Automated Content Analysis to Quantify Valence, Themes, and Norms Mentioned in Tobacco and E-cigarette Coverage across Four Media Sources(2019-01-01) Gibson, Laura; Williams, Sharon; Siegel, Leeann; Lee, Chae; Volinsky, Allyson; Hornik, RobertPublication Evaluating Cross-Sectional and Longitudinal Associations Between Anti-Smoking / Anti-Vaping Beliefs, Intentions, and Behavior in a 3-Year Rolling Nationally Representative Survey of U.S. Youth and Young Adults(2020-09-01) Jesch, Emma; Kikut, Ava; Hornik, Robert C.Publication Communication and Diet: An Overview of Experience and Principles(2007-01-01) Hornik, RobertAs nutrition officials face the need to address widespread chronic obesity and its associated diseases, many have turned to media campaigns as a strategy for reaching large audiences. In the past, such efforts have had mixed results. Examples of successful and unsuccessful major public health campaigns are presented, including a small number related to diet. One implication of the analysis of those cases is the importance of obtaining high levels of exposure to messages. Several strategies for maximizing exposure are elaborated, including the use of paid advertising, relying on donated time, and earning coverage through media advocacy.Publication Predictive Validity of an Empirical Approach for Selecting Promising Message Topics: A Randomized-Controlled Study(2016-06-01) lee, stella juhyun; Brennan, Emily; Tan, Andy; Gibson, Laura Anne; Kybert-Momjian, Ani; Hornik, Robert; Liu, JiayingSeveral message topic selection approaches propose that messages based on beliefs pretested and found to be more strongly associated with intentions will be more effective in changing population intentions and behaviors when used in a campaign. This study aimed to validate the underlying causal assumption of these approaches which rely on cross-sectional belief–intention associations. We experimentally tested whether messages addressing promising themes as identified by the above criterion were more persuasive than messages addressing less promising themes. Contrary to expectations, all messages increased intentions. Interestingly, mediation analyses showed that while messages deemed promising affected intentions through changes in targeted promising beliefs, messages deemed less promising also achieved persuasion by influencing nontargeted promising beliefs. Implications for message topic selection are discussed.Publication Some Complementary Ideas About Social Change(2002-01-01) Hornik, RobertPublication Measuring Campaign Message Exposure and Public Communication Environment Exposure: Some Implications of the Distinction in the Context of Social Media(2016-01-01) Hornik, RobertThe comments in this article suggest that the measurement differences associated with the distinction between assessing exposure to specific campaign messages and assessing exposure to ideas in the public communication environment may become sharper in the context of social/digital media, compared to traditional media. The argument: using social media to deliver specific campaign messages to a large targeted audience is hard, and measurement of exposure will be more demanding than with conventional media sources. In contrast, when the goal is to capture exposure to information in the pubic communication environment, “big data” based content analyses of social media streams may be a valuable approach; still there is much more work to do to establish the validity of these approaches and their usefulness in accounting for behavior.Publication Does Seeking e-Cigarette Information Lead to Vaping? Evidence from a National Longitudinal Survey of Youth and Young Adults(2019-03-01) Yang, qinghua; liu, jiaying; Lochbeuhler, Kirsten; Hornik, RobertYouth and young adults (YYAs) are vulnerable populations for e-cigarette use or vaping. This study examined the effect of YYAs’ health information seeking behavior (HISB) around e-cigarette use and vaping on their subsequent vaping behavior. We conducted a nationally representative longitudinal phone survey of 13–25 year olds from June 2014 to September 2016, with 2,413 respondents who completed a baseline and follow-up survey six months later. The results from lagged logistic regressions and mediation analyses showed a) that information seeking predicted higher likelihood of vaping six months later even after controlling for baseline smoking and vaping status, intention to vape, and demographics, and b) that information seeking partially mediated the relationship between intention to vape and subsequent vaping behavior. Theoretical and regulatory implications are discussed.