Ever wonder why we feel uneasy when our actions don’t align with our beliefs? The theory of cognitive dissonance, developed in the 1950s by psychologist Leon Festinger, explains this perfectly. Festinger’s theory originated when he observed a group whose belief in an impending apocalypse was proven wrong—yet they found ways to justify it! This discomfort when beliefs and actions don’t match (like smoking despite knowing it’s harmful) is called cognitive dissonance. Dive into the full YouTube video to learn the roots, meaning, and everyday examples of cognitive dissonance, plus tips on managing this mental tug-of-war!