EN
Amartya K. Sen is criticised for a modification of mainstream rational choice theory by an introduction of the commitment concept. This kind of modification sometimes is treated as a mistake. This article attempts to interpret the Amartya Sen’s concept of rationality. The means to this end will be an analysis of the ways of explanation of socalled Sen’s mistake. Three critical approaches to Sen’s concept of rationality made by Philip Pettit, Daniel Hausman and Geoffrey Brenan will be examined. In conclusion Sen’s concept of rationality, which includes the concept of commitment, should be interpreted as an approach which provides a subject with an autonomous expression of oneself, agency, responsibility and skills of critical thinking.