Multiple choice general knowledge

An average person’s short-term memory can only hold ___ digits at a time.

  1. 7

  2. 10

  3. 15

  4. 20
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cognitive psychology research, famously by George Miller, established that human short-term memory capacity is approximately 7 items (plus or minus 2). This is often called 'Miller's Magic Number' and explains why phone numbers are traditionally 7 digits. Options B, C, and D exceed typical cognitive capacity.

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