論文アブストラクト： Do patterns of growth and stabilization found in large peer production systems such as Wikipedia occur in other communities? This study assesses the generalizability of Halfaker et al.'s influential 2013 paper on "The Rise and Decline of an Open Collaboration System." We replicate its tests of several theories related to newcomer retention and norm entrenchment using a dataset of hundreds of active peer production wikis from Wikia. We reproduce the subset of the findings from Halfaker and colleagues that we are able to test, comparing both the estimated signs and magnitudes of our models. Our results support the external validity of Halfaker et al.'s claims that quality control systems may limit the growth of peer production communities by deterring new contributors and that norms tend to become entrenched over time.
Wikipediaなどのピア・プロダクションを例に，回帰分析を用いて“The Rise and Decline”の理論を検証した．結果として，“The Rise and Decline”の妥当性を裏付けることができた
論文アブストラクト： Gender equality between mothers and fathers is critical for the social and economic wellbeing of children, mothers, and families. Over the past 50 years, gender roles have begun to converge, with mothers doing more work outside of the home and fathers doing more domestic work. However, popular parenting sites in the U.S. continue to be heavily gendered. We explore parenting roles and identities on the platform Reddit.com which is used by both mothers and fathers. We draw on seven years of data from three major parenting subreddits-Parenting, Mommit, and Daddit-to investigate what topics parents discuss on Reddit and how they vary across parenting subreddits. We find some similarities in topics across the three boards, such as sleep training, as well as differences, such as fathers talking about custody cases and Halloween. We discuss the role of pseudonymity for providing parents with a platform to discuss sensitive parenting topics. We conclude by highlighting the benefits of both gender-inclusive and role-specific parenting boards. This work provides a roadmap for using computational techniques to understand parenting practices online at large scale.
論文アブストラクト： The extensive Wikipedia literature has largely considered Wikipedia in isolation, outside of the context of its broader Internet ecosystem. Very recent research has demonstrated the significance of this limitation, identifying critical relationships between Google and Wikipedia that are highly relevant to many areas of Wikipedia-based research and practice. This paper extends this recent research beyond search engines to examine Wikipedia's relationships with large-scale online communities, Stack Overflow and Reddit in particular. We find evidence of consequential, albeit unidirectional relationships. Wikipedia provides substantial value to both communities, with Wikipedia content increasing visitation, engagement, and revenue, but we find little evidence that these websites contribute to Wikipedia in return. Overall, these findings highlight important connections between Wikipedia and its broader ecosystem that should be considered by researchers studying Wikipedia. Critically, our results also emphasize the key role that volunteer-created Wikipedia content plays in improving other websites, even contributing to revenue generation.
論文アブストラクト： Local community ties are an important social resource, but research shows that these ties have been declining. The social significance of location information offers an opportunity address this decline and support local community building. Through this research, we aim to understand if and how passive location sharing might be socially beneficial for communities. We conducted a deployment of MoveMeant, a location awareness app, across three different communities. Following a research through design approach, we conducted 45 interviews with users of the system and community leaders. The findings suggest that communities face issues related to lack of awareness, cohesion, and identity. We show that the app can help increase awareness of important community resources. At the same time, the findings also show a negative effect of surfacing divisions in a community, which we discuss as a intermediate, perceptual step that may contribute to the amplification effect of technology.