split brain research and hemispheric lateralisation

Question 1

split brain patients show unusual behaviour when tested in experiments. briefly explain how unusual behaviour in split brain patients could be tested in an experiment (2)

Answer 1

experimental situation eg split visual field with a stimulus being visual, faces, words, auditory, digits etc
and the task for the patient to be verbal, visuospatial response eg drawing, matching

Question 2

briefly evaluate research using split brain patients to investigate hemispheric lateralisation (4)

Answer 2

the disconnection between the hemispheres was greater in some patients than others

some patients has experiences drug therapy for longer than others

the comparison groups were not considered to be valid as they were often people with no history of epileptic seizures.

the data was artifically produced as in real life a severed corpus callosum can be compensated for by the unrestricted use of 2 eyes.

research related to small sample sizes