Coding, capacity and duration

• Coding, capacity and duration

  Coding = world recall of similar/dissimilar words, Baddeley found acoustic in STM, semantic in LTM

  Capacity = digit span, Jacob’s found 9.3 digits, 7.3 letters span of memory and chunking, Miller found 7+-2 span

  Duration = duration of STM Peterson & Peterson found 18 seconds, duration of LTM Bahrick yearbook photos
• Coding, capacity and duration evaluation

  Coding = +identified STM and LTM supporting MSM

  -artificial stimuli, word lists had no personal meaning

  Capacity= +later studies replicated findings

  -overestimated STM, Cowan found only 4 chunks

  Duration = +meaningful materials for LTM so high external validity

  -meaningless stimuli in STM study