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AbstractPrevious studies have confirmed the causal effect of performance information on citizen satisfaction, but they were primarily conducted in survey experimental settings that featured hypothetical and abstract scenarios and primed respondents to look at certain aspects of performance information. Whether the causal effects hold in the real world, which is a much more complex information environment, is questionable. We address the gaps by employing a regression discontinuity design to identify the impact of public schools' performance grades on parents' satisfaction with teachers and overall education in New York City. We find that performance signals have independent and lasting effects on citizens' satisfaction. However, the effects are nonlinear, depending on the levels of performance signals. Parents' responses are muted at the A/B performance grade cutoff, but their satisfaction increases significantly at the B/C and C/D cutoffs if their schools earn relatively higher grades.

Why do some politicians actively use social media, while others lag behind? To answer this question, we propose that opposing party politicians, underdogs, and extremists are more likely to become active political tweeters. Research has shown that media attention is generally concentrated on politicians with power; that is, ruling parties and party leaders. We thus hypothesize that politicians marginalized from media attention, namely backbenchers and those from opposing parties, may perceive greater potential benefits from social media. Further, politicians whose ideological positions do not match well with those of major news media (i.e., extremists) may perceive risks in facing tough questions from journalists, as well as the media's gatekeeping process. We thus hypothesize that extremists may perceive greater benefits from using social media, because they can control their message. We tested these hypotheses using data on U.S. Senators' public communication activities on Twitter and in press releases in 2009–2011 and found strong support.