Are Free Agents Perspicacious Peregrinators?
检验了Polachek和Horvath的“精明迁徙者”模型，利用1977-1979年美国职棒大联盟球员的迁移决策数据，发现自由球员的迁移与预期收益相关，而非自由球员则不然。
The perspicacious peregrinator model of Solomon W. Polachek and Francis W. Horvath hypothesizes that individuals decide to migrate based on the size of potential gains. This model is tested using themigration decisions of Major League Baseball players between 1977 and1979. Potential gains are measure d as the differ-ence between earnings with and without migration. A distinction is made between players eligible for free agency and those ineligible so as to a ccount for differences in the level of competition for players' services in diff erent segments of this market. Migration is found tobe related to the expected gain from earnings for players eligible for free agency, but not for those ineli gible. Copyright 1987 by MIT Press.