WMM psychologists

• Baddeley and Hitch


  • Believed memory is a number of different stores
  • Focused on STM and believed it was a unitary store
  • LTM as a more passive store that holds previously learned material for use by the STM when needed
• Baddeley dual task performance 


  • participants completed either one visual and one verbal task at the same time, or two of the same type of task at the same time
  • Showed that participants had more difficulty doing two tasks that use the same component than doing two tasks of different components
• Case Study - KF

  • Shallice and Warrington
  • Suffered brain damage in motorcycle accident
  • KF could recall information when he saw it (visual) but not when it was read to him (acoustic)