The study aimed to test how Polish students assess their average mood. The research was based on American and Polish studies conducted several years ago. In the U.S. study, students rated their mood as better than usual, while the Polish students in the 1990s rated theirs as worse than usual. Participants in our study were 82 people. For 30 consecutive days they rated their mood using a 7-point scale. It turned out that the participants tended to rate their mood on (...) a given day as the same as the average one. These results are different from those obtained for Polish students several years ago. (shrink)