| Sumario: | A commentary on G.M. Shields and M.P. Shields' “A Theoretical and Empirical Analysis of Family Migration and Household Production: U.S. 1980-1985,” which appeared in the Southern Economic Journal, April 1993, pp. 768-82. In their model of migration in a utility maximization framework, Shields and Shields present two key comparative static results linking changes in the wife's wage to the family's migration decision that are incorrect. These mathematical errors have two important implications: They may change the sign of the model's result on the decision to migrate, and they cause Shields and Shields to ignore competing income and substitution effects of a change in the wife's wage.
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