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Leadership without Leaders? Starters and Followers in Online Collective Action

Presented by Helen Margetts and Peter John at the European Consortium of Political Research (ECPR) general conference in Rejkavik on 26 August 2011.

Draft Paper: Applying Social Influence to Collective Action: Heterogeneous Personality Effects

Political scientists and economists commonly test for different kinds of social influence on collective action, particularly social pressure (visibility) and social information about the contributions of others (leading to conditional cooperation) but rarely in the same study design. This paper assesses the relative effect of these two kinds of social influence suggesting that their impact is best understood through hypothesizing for heterogeneous treatment effects based on personality.

Social Information and Political Participation on the Internet: an Experiment

This paper tests whether the social information provided by the internet affects the decision to participate in politics. In a field experiment, subjects could choose to sign petitions and donate money to support causes. Participants were randomized into treatment groups that received varying information about how many other people had participated and a control group receiving no social information.

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