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How many X's do you know'' surveys - Columbia University

How many X's do you know'' surveys - Columbia University

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Overview<br />

Social and political polarization<br />

Background: how <strong>many</strong> people <strong>do</strong> <strong>you</strong> know?<br />

Learning from “<strong>How</strong> <strong>many</strong> X’s <strong>do</strong> <strong>you</strong> know” <strong>surveys</strong><br />

Next<br />

Running the demo<br />

3 models<br />

Fitting our model<br />

Results: how <strong>many</strong> people <strong>do</strong> <strong>you</strong> know?<br />

Results: group sizes and overdispersions<br />

Confidence building and model extensions<br />

◮ <strong>How</strong> <strong>many</strong> Nicoles, Anthonys, lawyers, people robbed?<br />

◮ Real-time data analysis<br />

◮ Entering in the data: 20 minutes<br />

◮ Running the program: 500 iterations (40 seconds), 1000<br />

iterations (80 seconds)<br />

◮ Real-time debugging: 15 minutes!<br />

◮ Altering the presentation: 15 minutes!<br />

◮ Results for social network sizes, α<br />

◮ Results for group sizes, β<br />

◮ Results for overdispersions, ω<br />

Gelman, DiPrete, Salganik, Teitler, Zheng<br />

Studying polarization using <strong>surveys</strong>

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