An extensive choice is a possibly indecisive choice behavior, in which all, some or none of the items in a menu may be selected. We describe a bounded rationality model for extensive choices, which relies on a pluralist paradigm. An extensive choice is s-pluralist if there is a population of...

We describe a model that explains possibly indecisive choice behavior, that is, quasi-choices (choice correspondences that may be empty on some menus). The justification is here provided by a proportion of ballots, which are quasi-choices rationalizable by an arbitrary binary relation. We call a...