Types of memory

• What are the different types of memory?

  Semantic and sensory
• what are the different types of sensory memory?

  Iconic (visual) and echoic (auditory) sensory memory.
• What is the duration of the sensory register?

  1-2 seconds (Crowder) Auditory information had longer duration than visual.
• How is the sensory register encoded?

  Sensory
• What is the capacity of sensory register?

  Large capacity, that doesn’t last long.
• procedure for Sperling’s capacity experiment?


  Flash array of letters, partial report of letters seen, measure recall accuracy.
• Findings of Sperling’s capacity experiment?

  Large capacity.
• Duration of short term memory?

  18-30 seconds
• Capacity of short term memory?

  7 (plus or minus 2) items
• coding of short term memory?

  Acoustically
• evidence for capacity of short term memory?

  Jacobs