Modelling spatial choice: A Review and Synthesis in a Migration Context

This paper reviews various approaches to the modelling of spatial choice. Spatial choice modelling is viewed as a distinct area of research, within the larger field of discrete choice modelling, with a sound methodological basis and computationally tractable modelling framework. This review draws upon empirical application of spatial choice models to interregional migration and identifies the main research issues, summarizes the progress of research thus far, and suggests some paths for future research. It is argued that some of the widely used models suffer from problems derived from their development in aspatial choice contexts. Acknowledging the increased complexity and, possibly, the different choice process that spatial choice situations present over their aspatial counterparts leads to the development of the so-called competing destinations model and its variants. Evidence from empirical tests of these spatial choice models suggests that analysts engaged in interregional migration modelling risk model misspecification if they ignore the peculiarities of spatial choice.