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Water is essential for human life, yet safe drinking water is a limited resource. Critical to fighting the global water crisis are public awareness campaigns, including Public Service Announcements (PSAs). While YouTube has become a popular medium for disseminating prosocial content such as PSAs, environmental communication efforts on this platform remain largely uninvestigated. This study examines the content and characteristics of global water crisis PSAs on YouTube by applying two communication models: the Extended Parallel Process Model, and the Elaboration Likelihood Model. These models are used to evaluate the potential effectiveness of the PSAs. Content analysis reveals that threat messages often outweigh efficacy messages in the videos, central route processing cues are more prevalent than peripheral route cues, and a focus on quality or quantity issues differed by sponsoring organization (non-profit, for-profit, government). Implications and avenues for potential future research are discussed. [ABSTRACT FROM AUTHOR]

Although Twitter chats and other forms of social media engagement events are idealized in the literature as opportunities for dialogic communication between organizations and individuals, less is known about how engagement is operationalized within these spaces. Using textual and content analysis, we conducted two studies to explore how health organizations engage with the public via Twitter chats during the Ebola and Zika outbreaks. In official records of Ebola chats, the organization addressed both hostile and neutral public questions that pressed for specification of disease characteristics and protocol. However, in a content analysis of all public tweets sent during a later Zika chat, we found that questions were privileged, and other tweet forms and themes were excluded from the participatory space. Specifically, public comments demonstrating expertise or extending the topic of the chat were not addressed by the organization. Our analysis provides insight into the implicit rules governing how organizations engage with the public online during a rapidly evolving health crisis. We argue that the question–response dyad is a form of ideal communication that suggests engagement but maintains organizational expertise. [ABSTRACT FROM PUBLISHER]

The methods by which politicians and policy makers communicate with the public are constantly adapting to the ever-changing media environment. As part of this changing landscape, this study considers the case of Twitter. Specifically, the authors conduct a survey of political Twitter users, in order to understand their use of the medium and their political behaviors within it. Results indicate that political Twitter users are more interested in and engaged in politics in general and less trusting of the mainstream media. Moreover, the study investigates the extent to which followers of a campaign may affect its overall influence in the Twitterverse. [ABSTRACT FROM PUBLISHER]

Trust in many government organizations is low, creating a challenging environment for communication during outbreaks of emerging infectious diseases, like Ebola. In a thematic analysis of 1,010 tweets and four Twitter chats during the 2014-2015 Ebola outbreak, we found that the Centers for Disease Control and Prevention emphasized organizational competence, extant protocol, and facts about transmission to manage public fear. We argue that an emphasis on certainty in a rapidly changing situation leaves organizations vulnerable to charges of unpreparedness or obfuscation. Our results also speak to the contested definition of engagement online, particularly during health crises. [ABSTRACT FROM AUTHOR]

This study explores potential factors that lead to environmental opinion leadership behaviors such as informing the public about environmental issues and encouraging preventative behaviors among various social groups. Building on the theoretical framework of the diffusion of innovations model, these analyses explore the effects that mass media may have on perceptions of self-efficacy among opinion leaders and how self-efficacy may, in turn, encourage leaders to communicate about aquatic invasive species (AIS) to others in their social networks. Results indicate that mass media and governmental media can have both a positive and negative influence on levels of self-efficacy, and that opinion leaders with higher levels of self-efficacy are more likely to participate in behaviors that could potentially influence their social network(s). These findings not only highlight factors that influence opinion leadership regarding advocacy of environmental behaviors, but also offer insights as to how future campaigns can work with these groups to promote prevention strategies. [ABSTRACT FROM PUBLISHER]

This study compares two frequently used operationalizations of understanding: factual knowledge and perceived familiarity. The authors argue that these measurements--which have been used interchangeably in past research--are conceptually distinct and should be treated as such. Using hierarchical linear ordinary least squares regression, this study provides evidence that factual knowledge and perceived familiarity are only slightly correlated and are influenced differently by predicting variables, such as media use and cognitive processing variables. As a result, the use of these measures may result in different assessments of the levels of public understanding, which has important implications for future policy decisions. [ABSTRACT FROM AUTHOR]

This study tests the relative mobilizing effects of predispositional factors and attention to media content during a gubernatorial race that focused heavily on stem cell research as a salient campaign issue. Our analyses are based on a statewide telephone survey (N = 508 in June–July 2006) conducted prior to the midterm and gubernatorial elections in the U.S. State of Wisconsin. Results show that ideological predispositions and attention to both newspaper and online media best explain issue participation. In contrast with prior research, our findings show that religiosity did not influence issue participation on the stem cell controversy in Wisconsin. Implications of these findings and the importance of research on issue participation for the field of public opinion research and the future of political campaigns are discussed. [ABSTRACT FROM PUBLISHER]

This study explores the relationships between discussion networks and the development of extreme attitudes toward stem cell research during the 2004 presidential election. The authors test competing theoretical models that address discrepancies in previous attitude polarization research¿whether interpersonal discussion leads to attitude extremity or extremity leads to discussion, within the deliberating American public. Using data from a nationwide mail panel survey carried out between 2002 and 2005, the authors explore within-wave and between-wave causal paths, revealing patterns difficult to discern in cross-sectional survey or lab experimental designs. Our findings show that political talk plays a substantial role in shaping and polarizing attitudes on stem cell research, with discussion in networks composed of like-minded others leading directly to the development of extreme attitudes. [ABSTRACT FROM AUTHOR]

How do citizens make sense of nanotechnology as more applications reach the market and the mainstream media start to debate the potential risks and benefits of technology? As with many other political and scientific issues, citizens rely on cognitive shortcuts or heuristics to make sense of issues for which they have low levels of knowledge. These heuristics can include predispositional factors, such as ideological beliefs or value systems, and also short-term frames of reference provided by the media or other sources of information. Recent research suggests that ‘religious filters’ are an important heuristic for scientific issues in general, and nanotechnology in particular. A religious filter is more than a simple correlation between religiosity and attitudes toward science: it refers to a link between benefit perceptions and attitudes that varies depending on respondents' levels of religiosity. In surveys, seeing the benefits of nanotechnology is consistently linked to more positive attitudes about nanotechnology among less religious respondents, with this effect being significantly weaker for more religious respondents. For this study, we have combined public opinion surveys in the United States with Eurobarometer surveys about public attitudes toward nanotechnology in Europe to compare the influence of religious beliefs on attitudes towards nanotechnology in the United States and Europe. Our results show that respondents in the United States were significantly less likely to agree that nanotechnology is morally acceptable than respondents in many European countries. These moral views correlated directly with aggregate levels of religiosity in each country, even after controlling for national research productivity and measures of science performance for high-school students. [ABSTRACT FROM AUTHOR]

Recent research has suggested that traditional and online news sources may differ with respect to their ability to inform audiences. In particular, there is tentative evidence that the hyperlink structure of online newspapers, for example, can promote a more in-depth understanding of political issues than traditional news media. The authors analyze data from the 2004 American National Election Studies (ANES) to test some of these relationships empirically. Specifically, the influence of traditional and Internet news sources on both differentiated and integrated political knowledge structures among citizens are examined. The findings reveal that users of online newspapers have higher levels of both integrated and differentiated knowledge, even after controlling for print newspaper and television use. Print newspaper use is only related to factual political knowledge, and television news use is unrelated to any of the measures of knowledge about the presidential campaign. [ABSTRACT FROM PUBLISHER]

Recent research has suggested that traditional and online news sources may differ with respect to their ability to inform audiences. In particular, there is tentative evidence that the hyperlink structure of online newspapers, for example, can promote a more in-depth understanding of political issues than traditional news media. The authors analyze data from the 2004 American National Election Studies (ANES) to test some of these relationships empirically. Specifically, the influence of traditional and Internet news sources on both differentiated and integrated political knowledge structures among citizens are examined. The findings reveal that users of online newspapers have higher levels of both integrated and differentiated knowledge, even after controlling for print newspaper and television use. Print newspaper use is only related to factual political knowledge, and television news use is unrelated to any of the measures of knowledge about the presidential campaign. [ABSTRACT FROM AUTHOR]

This article examines the relationship between awareness, knowledge, and motivations in adopting behaviors that prevent the spread of Aquatic Invasive Species (AIS) such as Viral Hemorrhagic Septicemia (VHS) among boaters and anglers who are a primary mechanism by which VHS can spread degrading water quality and fisheries. Although previous Extension efforts have focused on imparting knowledge to change environmental behaviors, results of the study reported in this article suggest that awareness and intrinsic motivation to protect the environment play a stronger role in adopting behaviors to prevent the spread of VHS. Implications for Extension professionals outreach efforts are discussed. [ABSTRACT FROM AUTHOR]