Flashbulb memories are vivid, highly detailed recollections of how one learned about a significant public event, such as the September 11 attacks. While these memories feel exceptionally accurate, research by Professors Phelps and Tallarico reveals that approximately 40% of the details change over time, even as confidence in their accuracy remains high. This phenomenon occurs because the amygdala enhances emotional storage while the hippocampus reconstructs memories each time they are retrieved, often incorporating new information from media or social interactions. George W. Bush’s misremembered sequence of the 9-11 attacks serves as a primary example of this "retrieval and updating" error. Ultimately, flashbulb memories serve to strengthen social identity and group cohesion by creating shared experiences. However, the increasingly fragmented modern media landscape may reduce the occurrence of these universal collective memories, instead localizing them within smaller, specialized social groups.
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