Experiments and the domain of economic theory

This paper distinguishes the base domain of an economic theory (in which predictions are relatively unambiguous) from, respectively, the domains of intended application and of legitimate testing; it argues that the domain of legitimate testing is not generally restricted to that of intended application; and discusses the obligations on researchers imposed by a position that presumes experimental environments in the base domain of a theory to provide legitimate test, unless there is compelling reason to expect behaviour in the domain of intended application to conform more closely to the theory. Experimental tests of choice theory are discussed as an example.