Lecture 7 - Memory 1 Flashcards
What is memory the process of?
Encoding, Storing and Retrieving information
Do encoding, storage, and retrieval focus on different aspects of memory performances?
Yes
Are encoding, storage and retrieval interdependent?
Yes- retrieval can’t happen without encoding and storage
What did early models of memory suggest that memory consist of?
The sensory register (store), short term memory and long term memory
What does Atkinson and Shiffrin’s model emphasise?
That memory storage varies in duration and capacity
What is the Sensory Register (Store)?
Holds information very briefly (under 1sec) and does little interpretation of info - different store for each sense
What stores has most research examined?
Iconic store (visual) and Echoic store (auditory)
What did Sperling (1960) research?
The capacity of the iconic store - suggests that iconic store holds info for about 500ms - very rapid decay
What is Short term memory?
Memory for items that have just been perceived - forms the ‘psychological present’
Limited in capacity (7 +/- 2) and duration (approx 20-30 seconds)
What did Miller (1956) suggest?
Short term memory can hold 7 ‘bits’ or units of information (+/-2)
• Used digit spans - longest list of numbers that can be remembered without errors
How can the capacity of the STM be increased?
By remembering chunks of information e.g. remember DOG rather than d, o ,g
What do recent conceptualisations of short term memory see it as?
Active process rather than passive storage
What is working memory?
An active processing system that keeps different types of information available for current use - remains for 20-30 seconds unless actively prevented from disappearing
What is Long term memory?
The relatively permanent storage of information - does not have a definite capacity
How can the distinction between long and short term memory be demonstrated?
Serial position effect - ability to recall dependent on order - earliest and latest items remembered better than middle
Primacy effect - better memory for items at beginning of list (reflects LTM)
Recency effect - better memory for items at end of lost (reflects working memory)