Medical imaging began with X-rays in 1895 — ultrasound followed in the 1950s, CT in the 1970s, and MRI in the 1980s.
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The FBI's COINTELPRO targeted several activist groups in the 1960s and 1970s.
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The Hawthorne effect suggests behavior changes when observed.
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The New Deal introduced major economic reforms during the 1930s.
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People are more likely to remember information that is emotionally charged.
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The Siege of Jerusalem in 70 CE led to the destruction of the Second Temple.
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Memories are reconstructed each time you recall them.
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Repetition can help move information into long-term memory.
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The NSA was officially established in 1952.
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