EN
The paper focuses on the question of whether there exists a relation between irrationality (Ellis type) and wisdom (as understood by M. Ardelt), and if it does, what it is, and to what extent irrational beliefs influence the level of wisdom. Results of a study conducted on 167 Slovak university students confirmed the negative relation of irrationality and wisdom, from which follows that rational persons were significantly wiser than irrational persons and women were wiser than men. The results also showed that of the 5 factors of the Irrational Belief Scale IPA, general wisdom was best (negatively) predicted by Negative Expectations.