Recall Aesop’s fable of the fox and the grapes. After trying in vain to reach the grapes, the fox gives up and wanders away, muttering, “They were probably sour anyway.” The fox’s change of heart is a perfect example of a common strategy we instinctively use to reduce dissonance. When we experience a conflict between our beliefs and our actions, we can’t rewind time and take back what we’ve already done, so we adjust our beliefs to bring them in line with our actions. If the story had gone differently, and the fox had managed to get the grapes, only to discover they were sour, he would have told himself that he liked sour grapes in order to avoid feeling that his effort had been a waste.

Author: Sheena Iyengar