How institutional factors at US land-grant universities impact scientists' public scholarship.

The call for public scholarship to emphasize the broader impacts of science has raised questions about how universities can support this work among their scientists. This study quantitatively assesses how institutional factors shape scientists' participation in public scholarship, a subset of public engagement focusing on scientists' involvement in public debate and democratic decision-making related to science policy. Based on a 2018 survey of scientists from 46 US land-grant universities (N = 6,242), hierarchical linear modeling results show that institutional factors, including tenure guidelines and the extent of government funding, play a minor role in influencing scientists' public scholarship participation. More importantly, scientists' perceptions of the university climate on support for engagement, including support from high-level administrators and for graduate students, are significant predictors of participation in public scholarship. Ultimately, these findings support the recommendation that universities should coordinate individual motivations with institutional missions to support a broader culture of public engagement.

Scientists' incentives and attitudes toward public communication.

In an era of large-scale science-related challenges and rapid advancements in groundbreaking science with major societal implications, communicating about science is critical. The profile of science communication has increased over the last few decades, with multiple sectors calling for such activities. As scientists respond to calls for public-facing communication, we need to evaluate where the scientific community stands. We conducted a unique census of science faculty at land-grant universities across the United States intended to spur the next generation of science communicators and research. Despite scientists' strong approval of science communication efforts, potential areas of tension, attributable to lack of institutional support and confidence in communication skills, constrain these efforts.

Distinguishing scientific knowledge: The impact of different measures of knowledge on genetically modified food attitudes.

The impact of knowledge on public attitudes toward scientific issues remains unclear, due in part to ill-defined differences in how research designs conceptualize knowledge. Using genetically modified foods as a framework, we explore the impacts of perceived familiarity and factual knowledge, and the moderating roles of media attention and a food-specific attitudinal variable (food consciousness), in shaping these relationships. Based on the differential effects on "negative attitudes" toward genetically modified foods, we provide further evidence that the measures of knowledge are separate concepts and argue against a one-dimensional view of scientific knowledge. We discuss implications for understanding the relationship between knowledge and science attitudes.

The case of #arseniclife: Blogs and Twitter in informal peer review.

Using the "#arseniclife" controversy as a case study, we examine the roles of blogs and Twitter in post-publication review. The controversy was initiated by a scientific article about bacteria able to substitute arsenic for phosphorus in its genetic material. We present the debate chronologically, using prominent online media to reconstruct the events. Using tweets that discussed the controversy, we conducted quantitative sentiment analysis to examine skeptical and non-skeptical tones on Twitter. Critiques of and studies refuting the arsenic life hypothesis were publicized on blogs before formal publication in traditional academic spaces and were shared on Twitter, influencing issue salience among a range of audiences. This case exemplifies the role of new media in informal post-publication peer review, which can complement traditional peer review processes. The implications drawn from this case study for future conduct and transparency of both formal and informal peer review are discussed.