Discuss schema theory Flashcards
Schemas
A theory proposed by Bartlett in 1932
What does schema theory propose?
Proposes that cognitive schemas are mental representations that organise our knowledge, beliefs and expectations.
Mental representation
A very broad concept that can be applied to practically everything in the mind, but only the most stable and deeply rooted mental representations can influence our knowledge, beliefs and expectation.
How can schemas be beneficial but what is the issue?
Schemas can be beneficial as it can help us find answers in a faster manner as we quickly associate information with what we already know; however the increase in memory efficiency can come at thecost of accuracy.
Schemas improve our memoryby relating new information to what we already know which can sometimes contaminate our memory as it leads to false or distorted recollections.
What does Bransford and Johnson demonstrate?
That schemas can influence the encoding of information in memory has been demonstrated in the study of Bransford and Johnson (1972).
They showed that a visual context provided prior to reading text passage double the rate of recall of ideas from that passage.
This therefore presents schemas as positive and that it benefits our recalling.
Aim of Bransford and Johnson
To investigate how schemas help us to store new information in our memory.
Procedure of Bransford and Johnson
They did this by having 3 groups of participants read a paragraph describing a number of steps in a procedure.
The groups were either told before, after or not at all that the paragraph was about laundry.
Results of Bransford and Johnson
The results were that the group that were told the topic of the paragraphbeforethey listened to it had significantly better memory than the other two groups.
What does Bransford and Johnson support?
It therefore support that schemas help participants to encode new information by making it possible to organise and interpret the information.
It also supports that memory is not simply about storing a copy of what you hear, but involves actively interpreting what you hear based on prior knowledge of the world.
How does the results of Bransford and Johnson relate to reconstructive memory?
This therefore relates to the reconstructive memory which is that the recalling of memory is an active process and that memory is reconstructed every time that it is recalled.
Evaluation of Bransford and Johnson
A strength of the study is that it is easy to replicate, and therefore has a high reliability as it is easy to get the same results as the original study.
It also clearly shows a causal relationship as it uses an experimental design and therefore demonstrates a causal relationship between schema activation which is the independent variable and ability to recall which is the dependent variable.
However, an issue with the study is that it involves an artificial task as it would be quite unusual to be read a paragraph without knowing what the paragraph is about.
Therefore, this study may not have much relevance for everyday situations involving memory and therefore makes the study have a low ecological validity.
What is the issue with schemas?
However even though schemas can help us remember information, it can often come at the cost of accuracy as it is dependent on information that we already know and therefore, when it is new information that is quite unusual for us, schemas can lead to distorting the information significantly.
What does Bartlett present?
In his study, he presented the two ways that schemas can distort memory.
Information that is consistent with our schemas will be remembered well, but information which is inconsistent with our schemas may be forgotten or distorted to fit our schemas.
This distortion happens at the moment of memory encoding when a new event is stored into memory.
The other distortion is when you can’t remember an event well, and therefore you fill in the missing details with your best guess, based on your schema for that event.
This distortion happens at the moment of retrieval when you are trying to remember an event from the past.
Bartlett procedure
Reading to British participants the “War of the Ghosts” twice and then asking the participants to reproduce it from memory soon after, as well as on a later date.The content and style of the story was unfamiliar to the British readers, as it was not written according to the storytelling conventions of English literature.
Results of Bartlett
When the participants recalled the story, the length of the story became shorter, and the story became more conventional. Unusual details were left out or distorted. However, no matter how much the recollection of the story differed from the original, it remained a coherent, completestory.