Influence   5153

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Nimtim adds pergola-like extension to 1950s terrace in south London
Timber portals frame large windows and skylights in this extension, which Nimtim Architects has added to the rear of a terraced house in Peckham
architecture  home  influence 
yesterday by prrd
Exercise contagion in a global social network : Nature Communications
We leveraged exogenous variation in weather patterns across geographies to identify social contagion in exercise behaviours across a global social network. We estimated these contagion effects by combining daily global weather data, which creates exogenous variation in running among friends, with data on the network ties and daily exercise patterns of ∼1.1M individuals who ran over 350M km in a global social network over 5 years. Here we show that exercise is socially contagious and that its contagiousness varies with the relative activity of and gender relationships between friends. Less active runners influence more active runners, but not the reverse. Both men and women influence men, while only women influence other women. While the Embeddedness and Structural Diversity theories of social contagion explain the influence effects we observe, the Complex Contagion theory does not. These results suggest interventions that account for social contagion will spread behaviour change more effectively.
contagion  social_networks  influence  causal_inference  via:duncan.watts  networks  teaching 
7 days ago by rvenkat
Is the Internet Causing Political Polarization? Evidence from Demographics
We combine nine previously proposed measures to construct an index of political polarization among US adults. We find that the growth in polarization in recent years is largest for the demographic groups least likely to use the internet and social media. For example, our overall index and eight of the nine individual measures show greater increases for those older than 75 than for those aged 18–39. These facts argue against the hypothesis that the internet is a primary driver of rising political polarization.

-- a really misleading version of the article here
http://www.vox.com/policy-and-politics/2017/4/12/15259438/social-media-political-polarization
democracy  media_studies  causal_inference  influence  polarization  political_science  us_politics  i_remain_skeptical 
13 days ago by rvenkat
Are Protests Games of Strategic Complements or Substitutes? Experimental Evidence from Hong Kong's Democracy Movement
We conduct the first field experiment directly manipulating individuals' beliefs about others' protest participation
INTERESTING  protests  influence  politics 
20 days ago by Walpole
Peer Effects on the United States Supreme Court by Richard Holden, Michael Keane, Matthew Lilley :: SSRN
Using data on essentially every US Supreme Court decision since 1946, we estimate a model of peer effects on the Court. We consider both the impact of justice ideology and justice votes on the votes of their peers. To identify these peer effects we use two instruments. The first is based on the composition of the Court, determined by which justices sit on which cases due to recusals or health reasons for not sitting. The second utilizes the fact that many justices previously sat on Federal Circuit Courts and are empirically much more likely to affirm decisions from their “home” court. We find large peer effects. Replacing a single justice with one who votes in a conservative direction 10 percentage points more frequently increases the probability that each other justice votes conservative by 1.63 percentage points. In terms of votes, a 10 percentage point increase in the probability that a single justice votes conservative leads to a 1.1 percentage increase in the probability that each other justice votes conservative. Finally, a single justice becoming 10% more likely to vote conservative increases the share of cases with a conservative outcome by 3.6 percentage points – excluding the direct effect of that justice – and reduces the share with a liberal outcome by 3.2 percentage points. In general, the indirect effect of a justice’s vote on the outcome through the votes of their peers is typically several times larger than the direct mechanical effect of the justice’s own vote.

-- a dilute version here
https://www.nytimes.com/2017/04/04/upshot/how-gorsuchs-influence-could-be-bigger-than-his-single-vote.html

-- a related paper here
http://www.princeton.edu/~jkastell/AA_Panel_Effects/kastellec_racial_diversity_final.pdf
empirical_legal_studies  us_supreme_court  influence  homophily  groups  judgment_decision-making  dmce  teaching  political_science  political_economy  collective_cognition  via:justin_wolfers  causal_inference 
22 days ago by rvenkat

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