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Social Networks


Migration and the value of social networks

What is the value of a social network? Prior work suggests two distinct mechanisms that have historically been difficult to differentiate: as...
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Spectral Models of Security

The rapid proliferation of mobile phones and other digital devices can created an unparalleled opportunity to observe and understand the rapidly changing...
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How Do Labor Markets Equilibrate? Estimating the Effect of Local Labor Demand Shocks on Internal Migration and Local Wages

A central question in the study of migration concerns the role that migrants play in bringing an economy towards a more efficient use of its resources...

Risk Sharing and Mobile Phones: Evidence in the Aftermath of Natural Disasters

We provide empirical evidence that an early form of “mobile money” is used to share risk. Our analysis is based on the...
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A Society of “Silent Separation”: Migration and Ethnic Segregation in Estonia

Ethnic segregation is a striking feature of many contemporary societies.  Yet, due in part to constraints of existing data, empirical efforts to...
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Statistical evaluation of a crowd-sourced market information system in Liberia

Many critical policy decisions depend upon reliable and up-to-date information on market prices. Such data are used to construct consumer price indices,...
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