Types of Memory Flashcards
1
Q
What are the two types of memory
A
Short term and Long term
2
Q
What is STM capacity
A
limited capacity
3
Q
What did Joseph Jacobs say
A
STM
- Average digits- 9.3 items
- Average letter span-7.3 items
4
Q
What did George Miller say
A
STM
- magic number 7(+2/-2)
- recall 5 letters as well as 5 words by chunking
5
Q
What is LTM capacity
A
unlimited capacity
6
Q
What is STM duration
A
short duration unless repeat items over and over
7
Q
What did Peterson’s study?
A
STM
- gave students a consonant syllable and 3 digit number to count down from until told to stop
- each trial they stopped at different times;3,6,9,12,15,18 seconds)- retention interval
8
Q
What did Peterson’s find
A
STM -on average: 90% correct after 3 seconds 20% correct after 9 seconds 2% correct after 18 seconds
9
Q
What is LTM duration
A
potentially lasts forever
10
Q
what was Bahricks study
A
LTM
- tested 392 ppts from 17-74
- recall tested by photo recognition and free call test
11
Q
what did Bahrick find
A
LTM
- photo recognition- ppts within 15 years of graduation were around 90% accurate and after 48 years was around 70%
- free call-15 years around 60% accurate and drop to 40% after 48 years
12
Q
what is encoding
A
info that we store has to be written in some form(code) and it can be held in form of sound(acoustic), images(visual) or meaning(semantic)
13
Q
what does acoustic mean
A
sound
14
Q
what does semantic mean
A
meaning
15
Q
what was Baddeleys four groups
A
gave different lists of words to 4 groups of ppts3
- group 1-acoustically similar
- group2-acoustically different
- group 3-semantically similar
- group 4-semantically dissimilar
