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Short-term memory is the ability to hold a small amount of information in a readily, available state for a short period of time. Usually the duration and the capacity to retrieve a short-term memory is just for a few seconds. Working memory should be distinguished from short-term memory as it refers to the structures and processes that are used to store and retrieve information in the short-term.

Example: A famous example is that we have at best the capacity to remember 7 + 2 elements at all time in our short-term memory.