• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Research studies that have suggested that decay and displacement are two possible explanations for forgetting in the STM. Outline & evaluate explanations for forgetting in the STM

Extracts from this document...

Introduction

Research studies that have suggested that decay and displacement are two possible explanations for forgetting in the STM. Outline & evaluate explanations for forgetting in the STM Forgetting is when the memory has disappeared and it is no longer in your memory or the memory is still stored in the memory system but for some reason you cannot retrieve it. Trace Decay is an explanation for the short term memory; it assumes that memories leave a trace in the brain. So this theory is suggesting that forgetting occurs as the fading of a memory trace. Waugh & Norman were psychologists who did experiments on trace decay and they presented participants with a series of 16 numbers. ...read more.

Middle

These experiments supported the trace decay theory. Decay is difficult to measure and there will always be other factors influencing forgetting and it would be impossible to isolate the traces from these factors. For example in Peterson and Peterson study where they had to recall trigrams it isn't clear whether the trigrams have been decayed or if the numbers from the interference task have displaced the trigrams. Displacement is another theory which try' to explain memory in the STM. It says that you are replacing the information with newer information because the STM has a limited capacity. This theory does focus on capacity. This theory uses George Millers theory with 7 is the magic number +/- 2. ...read more.

Conclusion

the earlier numbers were presented earlier in time and so this could be because they were forgotten as a result of trace decay. Shallice recognized this and looked deeper into this. He said that although time did affect recall, the number of items following the probe number seemed to have a much greater effect so this suggests that the displacement theory provides a better explanation in forgetting in the STM. So although these researchers have tried to prove their theories the evidence is inconclusive but the experiments suggest that these theories are possible. More research and evidence is needed. Measuring and trying to prove forgetting is hard to measure and control and many factors will influence forgetting which would be out of the experimenter's control. ?? ?? ?? ?? Anna Clarke ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Cognitive Psychology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Cognitive Psychology essays

  1. The effect of chunking on memory recall in STM.

    or seven pieces of information as some of the participants in my experiment held more than that.

  2. Outline and Evaluate Two Explanations of Forgetting.

    and that this will decay in time unless the trace is passed to long term memory. The trace disappears just like a photographic image that is not fixed with chemicals.

  1. Cognitive Explanations of Addiction.

    frequent or the costs clearly outweigh the benefits but the behaviour persists. Becker and Murphy testified that people choose to engage an addictive behaviour after weighing up the costs and benefits. The model uses the concept of a 'Utility', from economics which is a measurement of satisfaction relative to the consequences of the action.

  2. 'Biological explanations of schizophrenia tell us all we need to know about this disorder.(TM)

    when L-dopa (a synthetic dopamine releasing drug) is given to people who are not schizophrenic, this can induce symptoms of paranoid, acute schizophrenia (Prentice, 2000). In similar fashion, the symptoms of schizophrenic patients often worsen when they are given amphetamine, which activates dopamine (van Kammen, Docherty, & Bunney, 1982).

  1. Report on Psychological Research into Eyewitness Testimony

    Whilst one group were informed that the robbery was real, the other group assumed it was merely a simulation. The group who believed the robbery to be real (and were led to believe that the responses they gave would be used as evidence in a court trial)

  2. Describe and evaluate at least two theories of forgetting.

    The term given to this is the encoding specifity principle. A study conducted by Tulving and Psotha [1971] compared cue - dependant forgetting with interference theory. Participants were given a retroactive interference task [learning information AFTER the material intended for recall].

  1. Outline and evaluate 2 explanations of forgetting in Long-term memory.

    Sometimes words were produced of similar sounds or meanings. The psychologists have reasoned that forgetting from long-term memory is always a retrieval failure deficiency and almost all the information is stored, but the only problem we come across is trying to find a way to access the information.

  2. Describe and evaluate explanations for prosopagnosia

    A weakness of the fusiform face area hypothesis is that research has provided conflicting evidence for this region being associated exclusively with faces. For instance, using functional magnetic resonance imaging, Gauthier et al (2000) found the area to be active when participants identified the type of bird or car presented and thus concluded the fusiform area is not face specific.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work