The content of official disaster warnings is often lost to peer influence in emergency
situations. This is also true in evacuation decisions, where people tend to leave when others …

This dissertation consists of three essays. In the first essay, I examine how border security
affects the behavior of criminal organizations that engage in illegal cross-border activities. I …

Cell phones have become ubiquitous in conflict zones. However, little is known about the
effect of communication technology on migration during civil war. I hypothesize that access …