Cognitive dissonance theory addresses the way people reconcile two apparently contradictory cognitions. It was developed by a group of psychologists led by Leon Fustinger, who studied a UFO cult in the 1950s. Disappointed that UFOs had not arrived, as the cult had publicly predicted they would, to carry off the cult members at an appointed time, the members of the group, supporting each other, made new public predictions that said the time was not quite right, and that their predictions had never been intended to predict an exact time and place. So confronted with facts that contradicted their beliefs, they simply invented a new reality. The book, and the theory, have been very influential in a number of areas, including psychology and memory studies in history.