Marcie found that remembering her ATM card number and pin number was much easier when she grouped the 12 numbers into sets of threes instead of trying to remember 12 separate numbers. What technique is Marcie using to extend her short-term memory capacity?

Chunking

Explanation:

Chunking could be described as when an individual breaks a whole lump of information into bits to be able to memorize them. The individual takes the information gradually from smaller groups to larger groups until they are being stored up in their memory. An example is storing phone numbers or bank accounts.

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explanation:

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a photo collage of women at work during world war 2