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Memory span is the number of items, usually words or numbers, that a person can retain and recall. It can be seen as a is a measure working memory (short-term memory). In a typical test of memory span, a list of random numbers is read out at about the rate of one per second. At the end of a sequence, the person being tested is asked to recall the items in order. The average span for normal adults without error is seven.

Individuals with larger memory spans can better keep in mind different stimuli, and this seems to give them an advantage for a wide variety of cognitive tasks. Memory span has been linked to performance on intelligence tests, standardized tests, reading skills, problem solving, and a variety of other cognitive tasks.


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