Memory Flashcards
What are the three stores in the Multi-Store Model (MSM)?
Sensory Register, Short-Term Memory (STM), Long-Term Memory (LTM)
Information flows linearly through each store
Each store has a different coding, capacity, and duration
What is the sensory register?
Where information from the senses enters memory
Very large capacity
Very short duration (less than half a second)
Modality specific (iconic for visual, echoic for sound)
What research supports the capacity of STM?
Miller (1956): 7 ± 2 items
STM can be increased using chunking
What research supports the duration of STM?
Peterson & Peterson (1959)
Participants recalled trigrams after delays
STM duration is around 18–30 seconds without rehearsal
What research supports the coding of STM?
Baddeley (1966)
Acoustically similar/dissimilar words
STM relies on acoustic coding
What research supports the duration of LTM
Bahrick et al. (1975)
High school yearbook photo recall
Recognition after 15 years: 90%
Suggests very long-term memory duration
What research supports the coding of LTM?
Baddeley (1966)
Semantically similar/dissimilar word lists
LTM relies on semantic coding
What is a criticism of the Multi-Store Model (MSM)?
Oversimplifies STM and LTM
Suggests unitary stores, which is challenged by KF’s case study
What case study challenges MSM’s view of STM?
KF (Shallice & Warrington)
Brain damage impaired verbal STM but not visual
Suggests multiple STM stores, not one
What are the types of LTM?
Episodic: personal memories
Semantic: general knowledge
Procedural: skills and actions
What research supports different types of LTM?
Tulving (1985): episodic and semantic stored in different parts of the brain
PET scans show different activity for each type
Clive Wearing: damaged episodic, intact procedural memory
What is the Working Memory Model (WMM)?
Developed by Baddeley & Hitch (1974)
Replaced STM in MSM
Focuses on short-term processing and multiple components
What are the components of the Working Memory Model?
Central Executive
Phonological Loop (inner voice)
Visuo-Spatial Sketchpad (inner eye)
Episodic Buffer (added later)
What is the function of the Central Executive?
Directs attention and allocates tasks
Limited capacity
Coordinates the other components
What research supports the Phonological Loop?
Baddeley et al. (1975)
Word length effect: easier to recall short words
Supports limited capacity of articulatory process
What is the Phonological Loop?
processes verbal and auditory info
Subdivided into:
Phonological store (inner ear)
Articulatory process (inner voice)
What is the Visuo-Spatial Sketchpad?
Processes visual and spatial info
Subdivided into:
Visual cache (stores images)
Inner scribe (arranges spatial info)
What is the Episodic Buffer?
Integrates info from all other components
Temporary store
Added later by Baddeley (2000)
What research supports the Visuo-Spatial Sketchpad?
Logie (1995): divided into visual and spatial
Dual task studies show interference if both tasks use same component
What is a strength of the WMM?
KF’s case: supports separate components
Impaired verbal STM, intact visual processing
What is interference theory in forgetting?
Two types:
Proactive interference: old interferes with new
Retroactive interference: new interferes with old
What is a limitation of the Central Executive?
Vague and under-explained
Needs further clarification or subdivision
What research supports interference theory?
McGeoch & McDonald (1931)
Word list learning
Similar material caused more forgetting
What is retrieval failure theory?
Forgetting occurs due to absence of cues
Encoding specificity principle: cue must be present at encoding and retrieval