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This data is used to support and evaluate the conclusions draw in the paper "The Economic Value of Augmentative Exoskeletons and their Assistance". The abstract for this paper is reproduced here:For augmentative exoskeletons that assist able-bodied users, a clear metric of success remains an open question. Here we leverage the Vickrey second-price auction to quantify the economic value added by lower-limb exoskeletons and their assistance. We posited that if exoskeletons provided helpful assistance during a difficult task, this value could be quantified through a lowering of participant auction bids to continue walking. The bidding results were compared across different conditions to determine the economic value of the exoskeleton, bearing in mind also the cost of wearing the added mass of the exoskeleton. Results show that the total value of the exoskeleton and assistance was modest. While most participants found the assistance itself valuable, this value was mostly offset by the extra mass added of wearing the exoskeleton. Our approach provides insight into how exoskeleton wearers may value different aspects of user experience. These results suggest economic value may be a powerful tool in the design and control of exoskeletons that maximize user benefit.

Objectionable speech or offense, such as misinformation, hate speech, and harassment, is prevalent on social media. Individuals who are exposed to offensive speech can be highly motivated to “say something” to object to such speech. The ways that people use to object to this speech range from appealing to reasoned argument and deliberation to attacking the offender's reputation. However, we lack an understanding of what types of objections can effectively discourage offensive speech on social media through their impact on the on-looking audience. Therefore, our study aims to investigate how different types of objections influence the on-looking audience’s perceptions (emotional, attitudinal, moral, and normative) of the offense and objection and further impact their supportive or suppressive behaviors. In addition, we also investigate whether the effects of different types of objections vary across different offense types (i.e., misinformation, hate speech, and harassment). Understanding the effectiveness of objections in deterring offensive speech and how and why these effects happen can contribute to developing interventions that help citizens become effective objectors to misinformation, hate speech, and harassment on social media. To achieve the above goals, we plan to conduct two studies. This preregistration refers to the first study. This study aims to explore the features of different types of objections (e.g., harshness) and how different types of objections influence the on-looking audience’s moral, emotional, and attitudinal responses and further impact their behavioral intentions.

Supplemental material, sj-docx-1-nms-10.1177_14614448221127674 for Heightened scrutiny: The unequal impact of online hygiene scores on restaurant reviews by Chao Yu and Drew Margolin in New Media & Society

Supplemental material, sj-docx-1-nms-10.1177_14614448221075774 for Sharing inequalities: Racial discrimination in review acquisition on Airbnb by Chao Yu and Drew Margolin in New Media & Society

Supplemental material, sj-docx-1-nms-10.1177_14614448221075774 for Sharing inequalities: Racial discrimination in review acquisition on Airbnb by Chao Yu and Drew Margolin in New Media & Society

Supplemental material, sj-docx-1-nms-10.1177_14614448221127674 for Heightened scrutiny: The unequal impact of online hygiene scores on restaurant reviews by Chao Yu and Drew Margolin in New Media & Society

Supplemental material, sj-docx-1-nms-10.1177_14614448221075774 for Sharing inequalities: Racial discrimination in review acquisition on Airbnb by Chao Yu and Drew Margolin in New Media & Society

Supplemental material, sj-docx-1-sms-10.1177_20563051211033815 for Tweeting About Climate: Which Politicians Speak Up and What Do They Speak Up About? by Chao Yu, Drew B. Margolin, Jennifer R. Fownes, Danielle L. Eiseman, Allison M. Chatrchyan and Shorna B. Allred in Social Media + Society

Supplemental material, sj-docx-1-sms-10.1177_20563051211033815 for Tweeting About Climate: Which Politicians Speak Up and What Do They Speak Up About? by Chao Yu, Drew B. Margolin, Jennifer R. Fownes, Danielle L. Eiseman, Allison M. Chatrchyan and Shorna B. Allred in Social Media + Society

We examine the growth, survival, and context of 256 novel hashtags during the 2012 U.S. presidential debates. Our analysis reveals the trajectories of hashtag use fall into two distinct classes: "winners" that emerge more quickly and are sustained for longer periods of time than other "also-rans" hashtags. We propose a "conversational vibrancy" framework to capture dynamics of hashtags based on their topicality, interactivity, diversity, and prominence. Statistical analyses of the growth and persistence of hashtags reveal novel relationships between features of this framework and the relative success of hashtags. Specifically, retweets always contribute to faster hashtag adoption, replies extend the life of "winners" while having no effect on "also-rans." This is the first study on the lifecycle of hashtag adoption and use in response to purely exogenous shocks. We draw on theories of uses and gratification, organizational ecology, and language evolution to discuss these findings and their implications for understanding social influence and collective action in social media more generally., Comment: Proceedings of the 7th International AAAI Conference on Weblogs and Social Media (ICWSM 2013)