STM & LTM

STM & LTM

1. Stands for short term memory

   • STM has a short duration
     • Studied by Peterson and Peterson
     • Duration is the amount of time a memory is available for
   • STM has a short capacity
     • Miller's 7+-2
     • Capacity increases with age
     • Capacity may actually be 4-5 items
     • capacity is the amount of info stored at one time
   • STM is encoded acoustically
     • Baddeley's study
     • Also coded using visual codes

2. Stands for long term memory

   • Has a possibly infinite duration
     • Memories can last up to 100 years
     • The yearbook study by Harry Bahrick
       • Recall worsens with age/ time
   • LTM is encoded semantically
     • Baddeley's study
     • Also coded using visual and acoustic codes
   • Has a infinite capacity
     • There is no limit of space in LTM