Labour Market Performance as a Determinant of Migration
研究了迁移者是否比非迁移者更具生产力，利用科特迪瓦面板数据发现，更具生产力的工人确实会迁移，且主要流向城市，导致农村流失高生产力劳动力。
Are migrants more productive workers than nonmigrants? Such a comparison concerns both observed and unobservable productivity factors. This paper focuses on the correlation between unobservable factors at places of origin and destination. A human capital model of migration demonstrates that more productive workers at the origin would migrate only if the correlation between origin and destination factors is strongly positive. Longitudinal data from the Ivory Cost suggest that, indeed, the more productive workers do migrate. Furthermore, people migrate generally towards cities. Therefore, rural areas lose their productive workers; urban areas may gain in productivity from the geographical shifts in population. Copyright 1993 by The London School of Economics and Political Science.