Sperry

Question 1

Method

Answer 1

Quasi experiment because the IV was naturally occurring. However, can be seen as a series of case studies because Sperry didn’t perform the surgeries.
IV - presence or absence of split brain
DV - recognising, drawing and naming objects

Question 2

Participants

Answer 2

11 participants. Male and female
2 of the participants had surgery way before the experiment and 9 had it recently
They were all right handed

Question 3

Visual test

Answer 3

Stimuli was either show to their LVF or their RVF or both. If they were only shown one then they had to cover the opposite eye. They run had to recall the object that they had seen on the screen

Question 4

Visual test results

Answer 4

When image was shown to RVF they could name image and find item using right hand.
When image shown to LVF they couldn’t name it but they could draw the image and find with left hand

Question 5

Tactile test

Answer 5

They had an object placed in one of their hands while they were blindfolded and they had to name the object

Question 6

Tactile test results

Answer 6

Object in right hand they could name and describe it and find object in bag with right hand but not left
Object in left hand they couldn’t name or describe and could find item in bag with left hand but not right

Question 7

Visual and tactile test

Answer 7

Image presented to their LVF or RVF then they had to find the correct object from behind the screen

Question 8

Visual and tactile test results

Answer 8

RVF they could find the object with right but not left

LVF they could find object with the left hand but not the right

Question 9

Test of right hemisphere

Answer 9

Shown geometric shapes in both visual fields then shown a nude picture in their LVF only

Question 10

Right hemisphere test results

Answer 10

Participants giggles and blushed at the nude but they didn’t know why. They couldn’t say what it was because it didn’t got to the left hemisphere

Question 11

Conclusion

Answer 11

Dominant hemisphere was the left because language and skills are based their. Right was responsible for pictures and emotions They give us the ability to speak.Severing the corpus callosum stops the hemispheres communicating so ha e their own stream of memories and consciousness.

Question 12

Strengths

Answer 12

Quasi experiment so allows to to test variables hat wouldn’t be possible within a lab or unethical to manipulate

Question 13

Aim

Answer 13

Effect of hemisphere deconnection and the functions of the left and right hemisphere