Memory
- Created by: JuliaMabiza
- Created on: 19-04-19 19:46
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- Memory
- 1. Short and Long Term Memory
- Short term memory
- memory for immediate events, STMs are measured in seconds and minute.
- Capacity: limited capacity- Jacobs(1887) STM has a limited capacity of 5-9 items. Miller(1956)- magic number 7+/-2
- Evaluation: capacity of STM may be more limited(Cowan, 2001), individual differences(Jacobs), the size of chunks matters(Simon, 1974)
- Duration:short duration- Peterson and Peterson(1959), less than 18 seconds
- Evaluation: testing STM was artificial, STM results may be due to displacement(Reitman, 1974)
- Encoding: acoustic (Baddeley)
- Evaluation- STM may not be exclsuively acoustic-Brandimote et al(1992)
- Long term memory
- memory for events that have happened in the past.
- Capacity:unlimited
- Duration: potentially unlimited range of minutes-years(Bahrick et al, 1975)
- Encoding: semantic(Baddeley)
- Evaluation: LTM may not be exclusively semantic-Frost(1972), Nelson and Rothbart(1972)
- Short term memory
- 2. The Multi-Store Model of Memory
- Sensory Register
- Coding in the SR
- echoic store=auditory info, iconic store=visual info, haptic=tactile info, gustatory=taste info, olfactory=smell
- research support-Crowder (1993)
- echoic store=auditory info, iconic store=visual info, haptic=tactile info, gustatory=taste info, olfactory=smell
- Capacity-large: Sperling(1960)
- Duration of the SR-limited duration: Walsh and Thompson(1978)
- Coding in the SR
- STM- info held here used for immediate tasks, limited capacity
- Maintenance rehearsal-repetition
- LTM
- Retrieval
- Evaluation
- the MSM is too simple-Shallice and Warrington(1970)
- it is questioned whether maintenance rehearsal is sufficient to create LTM-Craik and Tulving
- how separate are STM and LTM-Ruchkin et al(2003)
- Sensory Register
- 3. The Working Memory Model
- Baddeley and Hitch(1974)
- 1. Central executive
- directs attention to particular tasks, limited capacity
- 2. Phonological loop
- phonological store-stores acoustically coded items-inner ear
- articulatory process-silently repeats words heard or seen-inner voice-form of maintenance rehearsal
- deals with auditory info, limited capacity
- 3. Visuo-spatial sketchpad
- used to plan a spatial task, visual info=what things look like, spatial=physical relationship between things
- Logie(1995)
- visual cache-stores info about visual items
- inner scribe-deals with spatial relations which stores arrangement of objects in the visual field
- Logie(1995)
- used to plan a spatial task, visual info=what things look like, spatial=physical relationship between things
- 4. Episodic Buffer
- added by Baddeley(2000)-general store, integrates info from the central executive, the phonological loop and visuo-spatial sketchpad
- Evaluation
- dual task performance-Hitch and Baddeley(1976)
- Evidence from brain damaged patients-Shallice and Warrington(1970)
- 4. Types of Long Term Memory
- Implicit
- Procedural memory
- memory for how to do things e.g riding a bike, driving, swim etc., acquired through repetition and practice
- AO3: associated with the cerebellum, basal ganglia and limbic system
- Procedural memory
- Explicit
- Semantic memory
- shared memories for facts and knowledge, relate to a) things b)behaviour c)abstract concepts e.g maths and lang.
- AO3: associated with the temporal lobe
- Episodic memory
- personal memories of events, 3 elements: specific details of event, the context and emotion
- AO3: associated with the hippocampusand other parts of the temporal lobe, associated with the frontal lobe
- Semantic memory
- Evaluation
- distinguishing procedural and declarative memories- case study of HM
- distinguishing episodic and semantic memories-Hodges and Patterson(2007)
- evidence from brain damaged patients
- Implicit
- 5. Explanations for forgetting: Interference
- Proactive interference
- Research-Underwood(1957)
- Retroactive interference
- Research-Muller and Pilzecker(1900)
- similarity of test materials-McGeoch and McDonald(1931)
- Evaluation
- artificial research
- interference only explains some situations of forgetting
- are interference effects just temporary?-Cesaro(1967)
- Proactive interference
- 6. Explanations for forgetting: Retrieval Failure
- Cued Recall
- The encoding specificity principle-Tulving and Thomson(1973), Tulving and Pearlstone(1966)
- Context-dependent forgetting-Abernethy(1940), Godden and Baddeley(1975)
- State-dependent forgetting-Goodwin et al(1969)
- Evaluation
- research support
- real world application-Smith 1979
- Retrieval cues do not always work
- 7. Accuracy of EWT: Misleading information
- leading questions
- Key research-Loftus and Palmer(1974)
- Loftus and Palmer(1974)-The Broken Glass Study
- Key research-Loftus and Palmer(1974)
- post event discussion
- Key Research: Gabbert et al(2003)
- Evaluation
- Research support for the broken glass study-Braun et al, 2002
- EWT generally inaccurate, unreliable-Foster et al, 1994, Yuille and Cutshall(1986)
- Research support for the broken glass study-Braun et al, 2002
- repeat interviewing-LaRooy et al 2005
- leading questions
- 8. Accuracy of EWT: Anxiety
- stress has a negative effect on accuracy
- Johnson and Scott(1976)-Weapon focus effect
- Anxiety has a positive effect
- Christianson and Hubinette(1993)
- Evaluation
- weapon focus effect may be caused by surprise and not by anxiety-Pickel(1998)
- real life vs lab studies
- Individual differences-Bothwell et al(1987)
- stress has a negative effect on accuracy
- 9. Improving the accuracy of EWT: The Cognitive Interview
- 1. mental reinstatement
- 2. Report everything
- 3. Change the order
- 4. Change the perspective
- Evaluation
- useful in improving interview techniques in Brazil
- not all these same procedures are used
- takes longer to complete than the traditional interview technique
- 1. mental reinstatement
- 1. Short and Long Term Memory
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