Memory Flashcards
What is the flow of information in memory?
Encoding -> storage -> retrieval
What is the multistore explanation?
Memory has more than one store.
What is the flow of information in the multistore model?
Sensory store -> short term store -> long term store
What is the capacity and duration of the sensory store?
Very limited, for less than a second
What is the capacity and duration of the short term store?
Approx. 7 chunks of information, for less than a minute
What is the capacity and duration of the long term store?
Unlimited, up to a lifetime
Recall the Peterson and Peterson study into the short term store.
Aim: is rehearsal necessary to hold info in the short term store?
Method: participants given sets of 3 letters to remember, then asked to count back in 3’s for different lengths of time. (This was to prevent rehearsal). They then had to recall the letters.
Results: participants forgot virtually all of the information after 18 seconds.
Conc: we can’t hold info in the short term store without rehearsing it.
Recall the Murdock study into the multi store model.
Aim: to provide evidence to support the multistore model
Method: participants shown a list of words, 1 at a time for 2 seconds each. then had to recall the words in any order.
Results: Words at the end recalled first (the recency effect). Words from beginning also recalled well (the primacy effect). Middle words not recalled very well.
Conc: Murdock decided this was evidence of separate short term and long term stores. Recency effect is evidence that the last few words are still in short term store. Primacy effect is evidence that the first few words had flowed into the long term store.
Evaluate Peterson and Peterson study.
-Had to learn nonsense syllables. Not what people do in the real world. Lacks ecological validity
-Not everything we learn has to be rehearsed. Many everyday events are easily remembered.
+Study help us to understand why it’s so difficult to remember the registration no. of a passing car or telephone no.
Evaluate Murdock Study.
- Had to learn a list of words. Not something people do in the real world. Lacks ecological validity.
- Not everything we learn has to be rehearsed. Many everyday events are easily remembered.
- Study helps us to understand why it’s difficult to remember the registration no. of a passing car or someone’s telephone no.
Practical implications of the multistore model?
Knowing that the short term store holds approx. 7 seven chunks of information explains why car registration no’s and postcodes never exceed that number- makes them easier to remember
What is reconstructive memory?
Altering our recollection of memory so that they make more sense to us
Recall Bartlett’s study into reconstructive memory.
Aim: to see if people, when given something unfamiliar to remember, would alter the information.
Method: participants asked to read a Native American legend, ‘War of the Ghosts’. Then were asked to recall the story. This was repeated several times over the following weeks.
Results: participants found it difficult to remember bits of the story to do with spirits and changed other bits of the story so it made more sense to them. Each time they retold it, they changed it a bit more.
Conclusion: our memory is influenced by our own beliefs
Recall Wynn and Logie’s study into reconstructive memory.
Aim: to see if the recall of familiar stories changed like Bartlett found with unfamiliar stories
Method: They asked uni students to recall their first week at university. They were asked to do this several times over a year.
Results: The accuracy of their descriptions didn’t change, no matter how many times they recalled it. This is unlike Bartlett’s participants.
Conc: Memories for familiar events will not change over time.
Evaluate the reconstructive memory studies.
+this model is important because it emphasises the importance of people’s prior knowledge and background on the way they remember things
+perhaps this is why people of different cultures have difficulty in agreeing with each other
-difficult to measure the accuracy of the retellings
-Bartlett’s stories isn’t similar to our everyday experiences
-we don’t know how accurate Wynn and Logie’s stories were to begin with
+these studies are more relevant to our everyday experiences