Question: who determined the capacity of short term memory
Answer: The most commonly cited capacity is The Magical Number Seven , Plus or Minus Two ( which is frequently referred to as Miller 's Law ) , despite the fact that Miller himself stated that the figure was intended as `` little more than a joke '' ( Miller , 1989 , page 401 ) and that Cowan ( 2001 ) provided evidence that a more realistic figure is 4 ± 1 units .