Spatial interaction modelling : a regional science context In this book the authors strong commitment to the multi disciplinary field of regional science emerges to provide a unifying framework between spatial modelling traditions from quantitative geography and those from spatial economics whereby each is enhanced. Starting with a detailed discussion of each field illustrated with numerical examples the two traditions are brought together by either making the economic models probabilistic or transforming the objectives of the geographic models to reflect both utility theory and production theory. The ideas are applied to develop urban models of activity analysis face to face contacts and housing supply as well as regional models in the areas of input output analysis imperfect competition and interregional migration. TOC:Prologue. Context and Methodlology: Geographical Roots of Spatial Interaction. Key Insights in Space and Microeconomics. Spatial Interaction Modelling Embracing Microeconomics. Some Examples in Urban Modelling: Activities as Generators of Spatial Interaction. Knowledge Exchange and Agglomeration. Imperfect Competition in Land Housing Markets. Some Interregional Contributions: Trade under Changing Networks and Technology. Imperfect Competition. Interregional Migration. Future Challenges. Subject Index. References