Memory Flashcards
What are the two types of memory that we have?
Long term and short term memory
What is coding?
Refers to how information is stored in memory, it’s format.
Is it stored according to how it sounds (acoustic)? Or its meaning (semantic)?
What is short term memory?
The limited capacity memory store. Coding is mainly acoustic, capacity is between 5-9 items, duration around 18 seconds.
What is long term memory?
The permanent memory store. Coding is mainly semantic (meaning), unlimited capacity, can store memories for a lifetime
Capacity
The amount of information that can be held in a memory store
Duration
The length of time information can be held in memory
Baddeley (1966) research and findings
Researched coding in STM.
Found that words were coded acoustically in STM.
Found that information was coded semantically in LTM.
Used word lists such as cat, mat, hat, chat in research on memory.
Peterson and Peterson (1959) research and findings
Researched duration of STM.
Used consonant syllables such as BNT in their research.
Found that STM lasts about 18 secs.
Used counting backwards as a means of preventing rehearsal.
Miller (1956) research and findings
Researched capacity of STM.
Used the term ‘the magical number 7’ to describe capacity of STM.
Did some research similar to that of Jacobs (1887).
Investigated chunking in STM.
Chunking
Breaking a larger piece of information down into smaller pieces
Primary effect
Remember the information received first better than information from later
Recency effect
Remember the information received recently better than older information
Why might memory models be useful in healthcare?
Could provide a map for memory for healthcare professionals, could help with diagnosis of memory issues, and may help developments of treatments for memory loss
Episodic Memory.
STM or LTM? What is it composed of? Explicit or Implicit?
Memory of our personal histories
LTM
Events we have experienced, people we know, places we have been, things we have done, stuff we own.
Explicit
Semantic Memory
STM or LTM? What is it composed of?
Explicit or Implicit?
What we know
LTM
Facts, knowledge about the world, words to communicate, concepts and ideas we come to understand
Explicit
Procedural memory
STM or LTM? What is it composed of? Explicit or Implicit?
Physical skills and abilities
LTM
How to put on socks, brush teeth, run, use mobile, drive a car
Implicit
Evaluation of LTM stores: case studies
Highly detailed, provide insight
Case studies might stimulate further research
Findings can’t be generalised to wider population
Lack of control of variables, what was the memory like before?
Evaluation of LTM stores: Brain scan evidence
Studies show different parts of brain active in different LTM tasks.
Episodic: hippocampus
Semantic: Prefrontal cortex
Procedural: Cerebellum
However, conflicting findings are present relating to where these stores are in the brain.
Multi Store Model
Describes flow between three permanent storage systems of memory: the sensory register (SR), short-term memory (STM) and long-term memory (LTM).
Why was the Working Memory Model developed?
Atkinson and Shiffrin’s Multi-Store Model of memory (MSM) was criticised for over-simplifying STM (as well as LTM) as a single storage system, so the WMM alternative proposed that STM is composed of three, limited capacity stores.
What is the central executive in the WMM?
Monitors incoming information, and assigns it to the appropriate slave system
Information is transferred from these slave systems into Long Term Memory
What is the phonological loop in the WMM?
Stores auditory information
Phonological store: holds words/sounds
Articulatory Process: allows words/sounds to be repeated, a kind of inner voice
What is the visuo-spatial sketchpad in the WMM?
Stores visual images and the spatial relationships between visual images
Two parts to the VSS
-Visual Cache: stores visual information
-Inner scribe: stores the position/spatial relationship between visual objects
What is the episodic buffer in the WMM?
Some memories are made up of visual and auditory information. Also, accurate recall requires a time line, or ability to sequence information, by putting it in the right order.
So EB brings together material from other subsystems into a single memory rather than separate strands, and also provides a bridge between working memory and long term memory