With the growth of online news over the past decade, empirical studies on political discourse and news consumption have focused on the phenomenon of filter bubbles and echo chambers. Yet recently, scholars have revealed limited evidence around the impact of such phenomenon, leading some to argue that partisan segregation across news audiences can- not be fully explained by online news consumption alone and that the role of traditional legacy media may be as salient in polarizing public discourse around current events. In this work, we expand the scope of analysis to include both online and more traditional media by investigating the relationship between broadcast news media language and social media discourse. By analyzing a decade’s worth of closed captions (2.1 million speaker turns) from CNN and Fox News along with topically corresponding discourse from Twitter, we pro- vide a novel framework for measuring semantic polarization between America’s two major broadcast networks to demonstrate how semantic polarization between these outlets has evolved (Study 1), peaked (Study 2) and influenced partisan discussions on Twitter (Study 3) across the last decade. Our results demonstrate a sharp increase in polarization in how topically important keywords are discussed between the two channels, especially after 2016, with overall highest peaks occurring in 2020. The two stations discuss identical topics in drastically distinct contexts in 2020, to the extent that there is barely any linguistic overlap in how identical keywords are contextually discussed. Further, we demonstrate at-scale, how such partisan division in broadcast media language significantly shapes semantic polarity trends on Twitter (and vice-versa), empirically linking for the first time, how online discussions are influenced by televised media. We show how the language characterizing opposing media narratives about similar news events on TV can increase levels of partisan dis- course online. To this end, our work has implications for how media polarization on TV plays a significant role in impeding rather than supporting online democratic discourse.

Technology use by long-distance hikers provide a fascinating glimpse of the future of HCI research, as it intersects with technology isolation and (non)use. We can understand the use of technology, explore opportunities for rural and outdoor computing, and work with underrepresented communities in these spaces to amplify their stories. In this paper, we focus on the thru-hikers on the Appalachian Trail and the stories they share on Instagram. We apply narrative analysis to understand the story content, and also leverage a News Value framework to describe how they craft their stories. The findings highlight opportunities to understand the different storytelling categories that thru-hikers employ, and the platforms they choose for the telling. We discuss the usefulness of understanding technology and storytelling needs for each type of storyteller, and explore the implications for designing technology and tools to amplify stories from underserved users and to support the telling of compelling stories.

Struggling to curb misinformation, social media platforms are experimenting with design interventions to enhance consumption of credible news on their platforms. Some of these interventions, such as the use of warning messages, are examples of nudges---a choice-preserving technique to steer behavior. Despite their application, we do not know whether nudges could steer people into making conscious news credibility judgments online and if they do, under what constraints. To answer, we combine nudge techniques with heuristic based information processing to design NudgeCred--a browser extension for Twitter. NudgeCred directs users' attention to two design cues: authority of a source and other users' collective opinion on a report by activating three design nudges---Reliable, Questionable, and Unreliable, each denoting particular levels of credibility for news tweets. In a controlled experiment, we found that NudgeCred significantly helped users (n=430) distinguish news tweets' credibility, unrestricted by three behavioral confounds---political ideology, political cynicism, and media skepticism. A five-day field deployment with twelve participants revealed that NudgeCred improved their recognition of news items and attention towards all of our nudges, particularly towards Questionable. Among other considerations, participants proposed that designers should incorporate heuristics that users' would trust. Our work informs nudge-based system design approaches for online media.

As news organizations embrace transparency practices on their websites to distinguish themselves from those spreading misinformation, HCI designers have the opportunity to help them effectively utilize the ideals of transparency to build trust. How can we utilize transparency to promote trust in news? We examine this question through a qualitative lens by interviewing journalists and news consumers---the two stakeholders in a news system. We designed a scenario to demonstrate transparency features using two fundamental news attributes that convey the trustworthiness of a news article: source and message. In the interviews, our news consumers expressed the idea that news transparency could be best shown by providing indicators of objectivity in two areas (news selection and framing) and by providing indicators of evidence in four areas (presence of source materials, anonymous sourcing, verification, and corrections upon erroneous reporting). While our journalists agreed with news consumers' suggestions of using evidence indicators, they also suggested additional transparency indicators in areas such as the news reporting process and personal/organizational conflicts of interest. Prompted by our scenario, participants offered new design considerations for building trustworthy news platforms, such as designing for easy comprehension, presenting appropriate details in news articles (e.g., showing the number and nature of corrections made to an article), and comparing attributes across news organizations to highlight diverging practices. Comparing the responses from our two stakeholder groups reveals conflicting suggestions with trade-offs between them. Our study has implications for HCI designers in building trustworthy news systems.

A months-long hike of the Appalachian Trail often involve long-term preparation and life-altering decisions. Would-be hikers leverage institutional knowledge from literature and online forums to physically and mentally prepare for such an arduous hike. Their use of social platforms provide useful insights on motivations for undertaking the thru-hike, how they deal with unexpected conditions on the trail and understand choices made in conditions of scarcity. By analyzing over 100,000 Reddit posts and comments in r/AppalachianTrail and applying a Sense of Community theory, we sought to understand hikers' identity as community members, how their emotional and practical needs are met, and how they evolve. We found that the role and language of thru-hikers change as they progress from pre-hike, on-hike, and post-hike stages, from a questioner early on, to an expert post-hike. We conclude with design recommendations to support offline communities online.

Physical inactivity is a global public health concern. Community-based interventions that use strategies such as competition and cooperation, with group dynamics-based strategies at their core, are effective at improving individual physical activity behaviors, but they often rely on participants to actively seek out fitness information themselves. This work examines how technologies such as smartwatches that are designed to raise awareness of personal and group fitness can encourage positive fitness behavior within and across peer groups. This paper presents a study about smartwatch use by 27 people as part of an 8- week community physical activity intervention program with elements of competition and cooperation, seeking to understand fitness awareness and behavior of the participants. Results indicate generally high awareness levels of smartwatch information. In particular, members of most successful groups exhibited significantly higher awareness for feedback displayed on the smartwatch.

The Technology on the Trail workshop will examine the encroachment of technology into hiking and outdoor adventures, with a focus on identifying and developing ways for technology to support positive and mutually beneficial connections among people. These connections include both intentional ones helpful in collecting scientific data, supporting the environment, maintaining safety, and sharing via social media. We will also explore more opportunistic connections, such as those that are leveraged when tracking and sharing biometric or geotemporal data. With the inclusion of technology in places where it is not used and sometimes not welcome, there will be mismatches of ethics and values that must be considered in the design and use of technology. The workshop will examine existing and emerging challenges of bringing technology onto the trail and reflect on ways to understand, design, and deploy appropriate technological solutions moving forward.