
Co-authored by Leon Festinger, Henry W. Riecken, and Stanley Schachter, this classic social psychology study examines a cult that predicted the end of the world. It introduces the concept of cognitive dissonance, explaining how individuals rationalize contradictory beliefs when their predictions fail.
He wrote this book called when prophecy fails and it's a really fascinating story where he was looking in a newspaper and he saw an announcement for the end of the world.
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"The speaker explicitly mentions this book by Leon Festinger as a fascinating psychological study about a cult and the concept of cognitive dissonance."





