How Segregated Is Urban Consumption?
利用Yelp评论数据，研究纽约市餐厅消费中的种族隔离程度，发现交通时间和社会摩擦共同导致消费隔离，但消费隔离程度仅为居住隔离的一半，且社会摩擦的影响大于空间摩擦。
We provide measures of ethnic and racial segregation in urban consumption. Using Yelp reviews, we estimate how spatial and social frictions influence restaurant visits within New York City. Transit time plays a first-order role in consumption choices, so consumption segregation partly reflects residential segregation. Social frictions also affect restaurant choices: individuals are less likely to visit venues in neighborhoods demographically different from their own. While spatial and social frictions jointly produce significant levels of consumption segregation, we find that restaurant consumption is only about half as segregated as residences. Consumption segregation owes more to social than spatial frictions.