Psychological discomfort from holding two inconsistent attitudes or beliefs is called:

1. Holding contradictory positions at once is uncomfortable. 2. Psychologist Leon Festinger defined cognitive dissonance in 1957. 3. He defined it as psychological discomfort arising from holding two or more inconsistent attitudes, behaviors, or cognitions. 4. People typically resolve it by changing one of the inconsistent elements. _Source: OpenStax Psychology 2e (CC BY 4.0), Ch 12 'Social Psychology', sections 12.1-12.5_