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This study explored how colleges and universities are employing Twitter, a popular microblogging tool. Using Kent and Taylor's principles of dialogic communication, a content analysis was performed on individual tweets (n=1130) from 113 colleges and universities. Tweets were coded for whether or not they met each principle of dialogical communication and why. It was found that institutions are not employing Twitter in a dialogic way and they are, instead, employing it primarily as an institutional news feed to a general audience. The implications of this finding are discussed.

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Five U.S. newspapers were searched for stories regarding childhood obesity. Of the 201 stories appearing in 1996, 2001, or 2006, 97 incorporated a public health frame (i.e., connects problem to the larger social and environmental context; exposes risk factors; includes information regarding preventatives and correctives). Significant risk factors were identified as unhealthy eating practices, lack of physical activity, and ads for junk food directed at children. Prevalent categories of preventatives and correctives focused on changes in diet, particularly in the home or in areas controlled by parents. Offered less frequently were suggestions regarding increases in physical activity. Consistent with previous research, the majority of both preventatives and correctives focused on individual-level as opposed to societal-level factors. Implications of these findings for the framing of news regarding childhood obesity are discussed.

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We analyzed the Internet Research Agency's (IRA) 2015-2017 English-language information operation on Twitter to understand the special role that engagement with outsiders (i.e., non-IRA affiliated accounts) played in their campaign. By analyzing the timing and type of engagement of IRA accounts with non-IRA affiliated accounts, and the characteristics of the latter, we identified a three-phases life cycle of such engagement, which was central to how this IRA network operated. Engagement with external accounts was key to introducing new troll accounts, to increasing their prominence, and, finally, to amplifying the messages these external accounts produced.

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