Flashcards
Psychology: Memory Revision
Cards in this deck (10)
- 1What is capacity?This is how much data can be held in a memory store.
- 2What is the capacity of STM?It’s said to 5-9 items (7 items plus or minus 2).
- 3What is the evaluation of STM capacity?1. The size of these chunks has to do with whether the person can remember or not.
2. There are many individual differences so people may have a better memory.
3. The capacity of STM may actually be more limited and may also depend on how the thing that needs to be remembered is conveyed eg. Visually or verbally. - 4What is duration?A measure of how long memory lasts before it is no longer available.
- 5What is the duration of LTM and STM?LTM potentially lasts forever but STM doesn’t last very long, unless you repeat the items over and over.
- 6How was the duration of STM tested?•It was tested by Peterson&Peterson.
•24 university students. Each tested over 8 trials.
•On each trial each participant was given a 3 letter consonant and 3 digit number (eg. THX 397).
•They were asked to recall the consonant syllable after retention intervals of 3,6,9,12,15 and 18 seconds.
•During the interval they had to count backwards from their 3 digit number. - 7What were the findings of the Peterson&Peterson experiment?On average over 90% correct over 3 seconds, 20% correct after 9 seconds and 2% correct after 18 seconds. Which shows that STM has a very short duration.
- 8Evaluate the Peterson&Peterson experiment•Lacks ecological validity as it’s not applicable to real life as meaningless syllables are not needed to be remembered in RL.
•Results may be due to displacement as students were asked to count backwards so doing that could actually displace the syllables to be remembered. So it wasn’t due to decay which means their experiment wasn’t measuring the duration of STM therefore lacks internal validity. - 9How was the duration of LTM tested?•Bahrick et al tested 400 people of various ages (17-74) on their memory of classmates.
•They were shown 50 classmates and asked to freely recall the names of the ones they could remember. - 10What were the findings for this experiment?•Participants who were tested within 15 years of graduation were 90% accurate in identifying faces.
•After 48 years , 70%
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- Flashcards on Psychology: Memory Revision, created by Chantelle Xx on 30/11/2017.
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- Chantelle Xx
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