| Article ID: | iaor2010360 |
| Volume: | 25 |
| Issue: | 2 |
| Start Page Number: | 47 |
| End Page Number: | 59 |
| Publication Date: | Jul 2008 |
| Journal: | Alkalmazott Matematikai Lapok |
| Authors: | Bodo Beata |
In this paper we discuss the following problem: how effect for the rationality or rationalizablity of the decision structure the extension or reduction of the optional set system. Our main aim is to find such conditions under which the decision structure preserves the revealed preference after the extension or reduction, too. We will show that any contradicted decision structure can be rationalized.