Types of Memory
- Created by: Thunder1107
- Created on: 24-08-17 13:21
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- Types of Memory
- Long term memory LTM
- Duration
- No Limit - Lifetime
- Harry Bahrick (1975)
- 400 people tested on their memory of classmates ans shown 50 images of classmates
- From a photo 15 y's= 90% 48 y's=70%
- Free recall 15 y's=60% 48 y's=30%
- Capacity
- No Limit
- Encoding
- Semantic (meaning)
- Baddeley (1966)
- He used a word list to test the effects of acoustic and semantically similar words on LTM
- Types of LTM
- Episodic
- Semantic
- Procedural
- Duration
- Short term memory STM
- Duration
- 18 seconds
- Peterson and Peterson (1959)
- 24 students given three consonants and three numbers to remember
- Recall after 3,6,9,12,15,18 seconds
- 3s=90% 9s=20% 18s=2%
- Capacity
- George Miller (1956)
- He came up with the "magic number 7"
- 7+/- 2 bits if info
- Joseph Jacobs (1887)
- The maximum is 9.3 digits and 7.3 letters
- George Miller (1956)
- Encoding
- Acoustically (sound)
- Baddeley (1966)
- He used a word list to test the effects of acoustic and semantically similar words on STM
- Duration
- Long term memory LTM
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