CHOOSY SEARCH AND THE MISMATCH OF TALENTS*
构建了一个多部门匹配模型，工人拥有部门特定技能且搜寻市场按部门分割。工人选择参与的市场范围会产生一种组成外部性，导致他们过度搜寻，即使Hosios条件成立，公共政策仍有干预空间。
This article proposes a multi‐sector matching model where workers have (symmetric) sector‐specific skills and the search market is segmented by sector. Workers choose the range of markets they are willing to participate in. I identify a composition externality: Workers do not take into account the impact of their choice on sector‐specific mean productivity among the pools of job‐seekers. Consequently, workers prospect too many market segments, and there is room for public policy even when the so‐called Hosios condition holds.