Professor John Horton's joint research on Uber drivers is referenced in an article about the sharing economy workforce
— September 24, 2018
Excerpt from ABC News -- "Research by Uber's chief economist, Jonathan Hall, and John Horton of New York University found that when Uber raised its fares, drivers initially earned more money. But there were offsetting effects: The higher rates attracted more drivers while reducing the number of trips consumers made. Overall earnings for drivers soon fell back to their previous levels."