ABSTRACT
In studies of spatial choice, many results have had questionable relevance to other areas because they reflected some of the properties of the particular spatial system from which they had been derived; the distance-decay function is one example. However, in other disciplines where models of choice have been developed, a conscious attempt has been made to construct models of preference from which conclusions can be derived that are independent of the particular set of 198alternatives where choices were observed. Thus a separation is made between preferences and opportunities. Models of spatial choice should attempt to define a preference-scale which orders all conceivable alternatives as do many other models of choice.
