Describes memory in terms of three parts: Short-term sensory store, short-term memory and long-term memory.
- Information enters throught the senses and the store is modality specific.
- Haber & Haber(1964)-Children with photographic/eidetic memories. More detailed recall as imagine could be visualised even after it had been removed.
- Sperling-Iconic store:Duration=0.5secs. Capacity=12. Echoic store:Duration=2secs. Localisation.
- Memory that we are consciously aware of.
- Duration= approx 18secs without rehearsal.
- Interference prevents transfer into LTM.
- Small capacity-becomes full. Chuncking=efficient.
- Conrad(1964)-acoustic encoding in STM but transfer from STSS to STM has different encoding.
- Info in STM transferred into LTM through rehearsal.
- Linton(1975) and Huang(1997)-research showed that LTM stores huge amounts of info even when stored a long time ago. Info can be recalled decades later even though deatils are lost at first.
- Linton(1975)-diary based investigation demonstrated that many items could be recalled up to seven years later using only cue cards=LTM has massive capacity.
- Bahrick & Schmidt-Huge amounts of info can be remembered even though details are lost at first.
- Baddeley-Semantically and acoustically similar words. Recall had errors with semantically similar words=LTM encodes using semantic code.
MSM is supported by strong evidence which suggest there are 3 types of memory.
- Sperling-supports existence of STSS as it shows the capacity and duration.
- Peterson & Peterson-supported theory of STM.
- Case studies support existence of LTM-Brain damaged patients can recall old info but not store new info.
- All evidence carried out in controlled lab setting=control of confounding variables.
Reductionist as it reduces complex memory structures to three unitary stores.
- Shallice & Warington(1970)-case study of brain damaged patient KF who was unable to store visual information but not verbal.
- MSM-STM has acoustic encoding. Evidence shows STM is more than unitary store.
Research has been carried out in an artificial lab setting.
- Sperling used unusual memory tasks unlike how memory is used daily.
- Research therefore lacks external validity.
- Sample from different age groups and people with above average intelligence=findings cannot be generalised to whole population.