Please enable JavaScript.
Coggle requires JavaScript to display documents.
Evualation - Coggle Diagram
Evualation
Strength Sperry
A strength of split brain research is that it has led to the understanding the brain lateralisation can increase neural processing capacity.
For example
By using only one hemisphere to engage in a particular task (e.g. language, mathematical ability), this would leave the other hemisphere free to engage in another function.
This is a strength because, such research does provide evidence that brain lateralisation enhances brain efficiency in cognitive tasks that demand the simultaneous but different use of both hemispheres. This therefore highlights that split brain research has been useful in helping individuals to understand more clearly the role of the brain/different hemispheres of the brain.
Weakness Sperry
However, there are a number of problems with this research:
Additional research has suggested that language may not be restricted to the left hemisphere.
Evidence
For example, Gazzinga (1998) suggests that some of the early discoveries from split-brain research have been disconfirmed by more recent discoveries. The case study of JW demonstrated that the right hemisphere may play some part in language like the left hemisphere as he developed the capacity to speak out of the right hemisphere (Turk et al 2002).
This is a weakness because, it suggests that there are inconsistent findings across split brain research making it difficult to from firm conclusions.
-
Sperry Weakness
In addition, there are limitations in carrying our split-brain research due to the fact that in the current day and age split-brain patients are very rare.
For example, Andrews (2001) argues that many studies are presented with as few as three participants, some studies have only a single participant making up the sample
This is a weakness because, Andrews argues that those patients seemingly making split-brain processing possible are based on small samples that are not representative of the wider population, therefore such research lacks population validity. In addition, Andrews states that such findings are very rarely replicated/consistency isn’t always obtained.
Weakness of Sperry
-
generalizability in question but it would have been difficult to find a large number of split brain patients
Weakness Sperry
Epilepsy is normally caused by brain damage, and patients had been on medication, which may have affected their brains
Hard to conclude that the ways they processed info would be the same for people without epilepsy / split-brain
-
-