Migrant Networks and Job Search: Evidence from Thailand
利用降雨冲击作为外生变量，识别泰国城乡移民的社会网络效应，发现网络虽缩短求职时间，但倾向于引导移民从事农业工作。
Social networks may be important to internal migrants in developing countries where the extent of information asymmetry is sizable. This paper identifies network effects among rural-urban migrants in Thailand by exploiting heterogeneous response to rainfall shocks as exogenous variation affecting network size. While networks substantially reduce the duration of job search, in this case they tend to direct migrants toward agricultural (rather than nonagricultural) jobs because the local average treatment effects estimator identifies what happens to employment outcomes when the agricultural part of the network increases.