We unify and expand the theory of consumer’s behavior, based on Samuelson’s Weak Axiomof Revealed Preference, to permit simultaneously both random choice and non-singletonchoice sets. We provide a consistency postulate for demand behavior when such behavior isrepresented in terms of a...

We explore the relation between two 'rationality conditions' for stochastic choicebehaviour: regularity and the weak axiom of stochastic revealed preference (WASRP). We show thatWASRP implies regularity, but the converse is not true. We identify a restriction on the domain ofthe stochastic...

We generalize the stochastic revealed preference approach to consumers’ behavior introduced byBandyopadhyay, Dasgupta and Pattanaik (1999). We identify a restriction on stochastic demandbehavior that we term “Stochastic Substitutability” (SS)...

We examine the status of the maximization hypothesis in the positive economic theory ofrational choice. We argue that, contrary to a common belief, the maximization hypothesisdoes not play any role in large areas of positive rational choice theory. In contexts where itdoes, it is not logically...