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And this is also known as "context-dependent memory"
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and "state-dependent memory."
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It's illustrated by one of the strangest experiments
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in the history of psychology
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where they had people on a boat
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and then they had them scuba dive underwater.
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And they taught them things
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either on the boat or underwater
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with things that they held up.
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And then they tested them later.
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And it turns out
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that you'll remember it better