Research on capacity: AO3

• Strength: Valid study (Jacobs)

  What? Jacobs' study replicated

  Who? Bopp and Verhaeghen - confirmed

  Why? Valid test of digit span
• Limitation: Not so many chunks (Miller)

  What? Miller overestimated STM capacity

  Who? Cowan - capacity of STM only about 4 plus or minus 1 chunks

  Why? 7 plus or minus 1 innapropriate