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Describe and Evaluate Experimental Research into STM.

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Introduction

Describe and Evaluate Experimental Research into STM Short-term memory information is selected for further processing passes from the SIS into the STM. It is thought that STM holds information in the form of images, sounds or meanings. Information in STM is kept 'alive' by rehearsing (repeating) it. Two key pieces of evidence about life span and capacity of STM: Peterson and Peterson (1959) gave participants a consonant trigram to remember (e.g. KDL) and then a large number. To prevent rehearsal they counted backwards in threes from the number and then recalled the trigram. ...read more.

Middle

elaborated on the idea of STM. They proposed that it was not just for brief storage of information. They thought it was also actively processed the information and decided what to do with it-hence the term 'working memory'. The working memory consists of three parts as shown in the diagram below. The central executive decides how to share out the limited resources of STM. It decides what is and is not to be attended to. It is also 'modality free' which means that it deals with both auditory and visual stimuli. ...read more.

Conclusion

In line with research findings that have cast doubt over the importance of verbal rehearsal, its role in memory is reduced to the articulatory loop only. The working memory model can explain how, in brain-damaged patients, selective deficits may occur in short-term memory. An updated version of the model has been propsed by Baddeley (1986). This sees the articulatory loop as comprsing a passive phonological store (voncerned with speech perception) and an articulatory control process (concerned with speech production). The revised model was better able to explain some of the neurophysiological evidence that did not fit the original model. Craik and Lockhart (1972) disagreed with Atkinson and Shiffrin's idea that memory consited ...read more.

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