Jacobs

• What did Jacobs (1887) research

  digit span
• aim of Jacobs

  to investigate how much information STM can hold at one time
• procedure of Jacobs

  researcher gave a certain number of digits to a participant for them to recall

  if recalled correctly, the number of digits increased
• mean span for digits

  9.3 items
• mean span for letters

  7.3 items
• strengths of Jacobs

  has replicated

  validity (controlled setting)

  reliability
• limitations of Jacobs

  very old study- lacks temporal validity

  low ecological validity