We review the literature that identifies selection bias in media-based data and propose a theoretical model of the sources of these biases. Given the implications for validity and reliability, we conclude that newspaper data often do not reach acceptable standards for event analysis and that using them can distort findings and misguide theorizing. Furthermore, media selection biases are resistant to correction procedures largely because they are unstable across media sources, time, and location. We end with a plea for more circumspect approaches to media data that fully and openly consider the implications of their inherent limitations.
Scholarship on collective civic action helps link collective-level contentious actions and individual-level civic engagement. Using longitudinal data from a group of New Orleans residents who started blogging in the wake of hurricane Katrina, we highlight the digitally mediated social processes linking individual civic engagement with collective civic actions. Through a developmental approach, we analyze the progression from individual blogging to the creation of social networks, the formation of a community of "Katrina bloggers," and their engagement on a range of offline collective civic actions. We argue that the Web serves as a "virtual" mobilizing structure, enabling individuals with shared concerns to organize across time and space, without the need of copresence or preexisting formal ties, networks, or organizations. Our analysis provides insights into the development of virtual communities and social movements formed around collective identities and processes of collective efficacy that highlight the dynamics of contention in civil society.
This study examines the relationships between collective violence, economic inequality, and repression. Some researchers propose that collective violence results from economic deprivation, while others emphasize the role of repression in producing violence. This study uses polynomial equations to analyze these relationships on 52 countries. Results suggest that collective violence varies as a cubic non-monotonic "N" shaped function of repression, while economic inequality is not directly related to violence. A strong military infrastructure is also found to deter collective violence. The combination of results supports the argument that extremely repressive regimes with weak military infrastructures tend to encourage a backlash of violence.
This paper investigates the relationship between International Monetary Fund (IMF)-sponsored economic programs and contentious collective action in Latin America from 1980 to 2007, hypothesizing a positive relationship between participation in IMF programs and the likelihood of social protest. Specifically, we suggest that people in recipient countries protest the unpopular IMF mandates not only because of the negative effects that orthodox economic policies have on their livelihood, but mainly because they perceive a loss of legitimacy and question the sovereignty of their domestic governments. That is, deciding to participate in an IMF program can make governments more prone to being perceived as caving in to the pressures of international agents, increasing the likelihood of contentious collective action. Results from two-stage negative binomial selection models provide strong statistical support for our main hypothesis, remaining robust to different specifications of the second-stage equation and other procedures that correct for potential statistical problems.
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