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Based on a 1956 review of memory research, psychologist George Miller concluded that the capacity of short-term memory is limited to approximately seven items, plus or minus two. This range, from 5 to 9 items, is often referred to as the 'magic number' in psychology.

The Magical Number Seven, Plus or Minus Two

Working memory capacity is a psychological characteristic that refers to an individual's ability to simultaneously hold and process multiple pieces of information in their mind. In cognitive psychology, this capacity can be quantified using systematic measurement procedures.

Working Memory Capacity

A research participant is asked to listen to a randomly generated list of 15 single-digit numbers and then immediately repeat them back in the same order. Based on the generally accepted capacity of short-term memory, which of the following outcomes is most probable?

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