Memory 2 Flashcards
Primacy
The tendency to remember the first items encountered
Recency
The tendency to remember items most recently encountered
Serial position curve
Shows likelihood of remembering an item in a list based on where it occurred in the list
Traditional view of STS vs LTS
Atkinson & Shiffrin (1968)
Modal model- rehearsal transfers thing from STS to LTS
Evidence against modal model
Rehearsal isn’t necessary or sufficient
not necessary as thing can be remembered without rehearsing
Not sufficient as it doesn’t always work- items need to be given meaning to be in long term memory
Evidence against isolated STS and LTS
Clinical evidence of patients with damage to STS doesn’t affect LTM as much as expected
When the STS is fully, what things should you be unable to do?
Shouldn’t be able to hold more information in STS such as secondary tasks (sentence verification, semantic judgements, list learning, understanding of prose)
Semantic judgements aren’t affected as much as expected
Multicomponent model for STS
Baddeley & Hitch (1974)
Proposed STS must have three components:
Central executive- acts as attentional controller governing flow of information
Visio-spatial scratchpad- stores and processes information in the visual and spatial form. Used for navigation
Articulatory loop- processes speech and stores information
Dual task interference, Brooks (1967)
Two tasks that require visuospatial resources interfere with each other much more than if one task is verbal and the other visuospatial
Evidence for phonological loop
Phonological similarity effect
Irrelevant speech effect
Word length effect
Phonological similarity effect
Poor recall of words where items sound similar as they interfere with each other
Shows that items are encoded according to the way they sound
Irrelevant speech effect
Recall impaired by simultaneous speech
Suggest involuntary phonological encoding
Word length effect
Serial recall is approximately the number of words you can read aloud in 2 seconds
Span is lower for longer words
Spans are longer for faster speakers
The central executive
Drives the working memory system
Allocates data to subsystems, phonological loop and visual sketchpad
Deals with cognitive tasks such as mental arithmetic and problem solving
Supervisory attentional system
Part of the central executive
Responsible for higher level cognitive processes
Stops you doing
Troubleshooting and decision making