Jeremy Dean pyschologist and author of psyBlog says that despite having little to gain, petty cheaters feel happier and more self-satisfied than those who follow the rules.
A study carried out by the University of Washington confirmed that the reasons people sometimes cheat even when there is little to be gained from it is because it feels good. Interestingly in their research and studies they carried out this ‘cheaters high’ was only experienced if the cheating did not directly involve someone else. In these studies participants were just cheating at numeracy and logic problems.