The present study recognizes that households might change location not only in response to changes in workplace but also in response to changes in housing supply conditions. Furthermore it recognizes that household location decisions might in turn influence the distribution of employment and housing across metropolitan space. The study thus develops a simultaneous-equations model of urban growth and intraurban location that treats housing employment and labor force location within the same framework. (excerpt)

HE objective of this study is to estimate T the magnitudes in which each of several factors influenced interstate migration over the period 1955-1960. Several variables were chosen which might reasonably be expected to explain the movements which occurred, and multiple regression analysis was used on the data. The most unique explanatory variable employed is the stock, i.e., the number of persons born in state i (the origin state) and living in state j (the destination state).' It is shown that the failure to include the migrant stock variable in the estimated relationship causes the true direct effect of most other variables to be obscured.

Michael J. Greenwood, John M. McDowell, Differential Economic Opportunity, Transferability of Skills, and Immigration to the United States and Canada, The Review of Economics and Statistics, Vol. 73, No. 4 (Nov., 1991), pp. 612-623

In this paper the authors have theoretically derived a net migration equation and estimated it using time-series data for 51 regions over the period 1971-88. The results indicate that the dynamic response of net migration is stable and is significantly related to stock equilibrium changes induced by amenity differentials, relative employment opportunities, relative real wages, and industry composition. Moreover, the explicit linkage of stock equilibrium to stable dynamic flows in the model ensures that any stock disequilibrium will generate a finite migration response sufficient to attain a new stock equilibrium. The estimated parameters determine the speed at which net migration re-establishes stock equilibrium. Coauthors are Dan S. Rickman, Gary L. Hunt, and Michael J. Greenwood.