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Psychology Core studies > Biological area > Flashcards

Biological area Flashcards

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1
Q

Sperry aim

A

Investigate the effects of disconnection between the hemispheres of the brain after the cut corpus callosum

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2
Q

Sperry research method

A

Quasi experiment

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3
Q

Sperry participants

A

11 participants that underwent split brain surgery for treatment for epilepsy

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4
Q

Sperry procedure

A

Expose a hemisphere to a stimuli either tactile or visual

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5
Q

Sperry procedure pt1

A

A picture of an object was projected to the RVF or LVF for a 1/10th of a second. They are asked to recognise it verbally

Visual stimulus projected to either VF and asked to describe it then write it down.

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6
Q

Sperry procedure pt2

A

Visual stimuli was presented simultaneously to both hemispheres. Were asked to draw with the left hand and say what they had drawn

Then words composed of 2 smaller words were shown. One to each VF. and say it

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7
Q

Sperry results

A

Quant and qual data gathered

Pictures only recognised if flashed to the same visual field again

Participants could only describe objects shown to RVF as left hemisphere controls speech

Participants could only write down objects shown to RVF Report only seeing a flash of light.

Could point to an object when shown to LVF. Because hands are controlled collaterally.

Participant can draw what is shown to LVF with left hand but instead describe what is shown to the RVF.

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8
Q

Sperry conclusions

A

In split brain patients the information shown to one hemisphere cant be shown to the other hemisphere.

Memory is independent in either hemisphere

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9
Q

Sperry validity

A

The procedure was highly controlled so it eliminated extraneous variables. EG. had to keep hands on tables shown for 1/10th of second.

Lacks ecological video. Uses lab environment. Cant be generalised because not done on typical brain. The sample is too small

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10
Q

Sperry reliability

A

Standerdized procedure. Lab procidure so it is easy. Shown for 1/10th seccond. Keep hands on the table

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11
Q

Sperry sampling bias

A

Sample made of 11 men and women who went through surgery

Very small sample and since not done on typical brain the findings are not representative or generalise.

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12
Q

Sperry ethnocentrism

A

Some cultures might be less lateralized in their speech functions Only done on english speakers

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13
Q

Casey aim

A

To test whether delay of gratification as a child has an effect on impulse control as an adult

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14
Q

Casey participants

A

started with 562 participants and ended with 59

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15
Q

Casey research method

A

Quasi experiment that used a longitudinal design

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16
Q

Casey procedure

A

At 4 years old participants were told not to eat the cookies.If they did low delayer if didn’t then high delayer

In 20’s 155 took a questionnaire on self control

In 30’s 135 retook same questionnaire

From this high delayers and low delayers away from the average were contacted and 59 took part in experiment in their 40’s

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17
Q

Casey procedure 2

A

32 high delayers and 27 low delayers. Did a hot and cool impulse task.

Press button or not. Go no go task

Showed faces with neutral expressions which is not appealing female and male faces determine go or not

Then 15 high delayers and 11 low delayers. Use an fMRI scan and facial expression is go no go task.

Hot task low delayers made more errors

18
Q

Casey conclusions

A

Low delayers stay low delayers can learn cooling techniques
Resistance to temptation stays stable
High delayers were more stimulated in inferior frontal gyrus
Low delayers more stimulated in ventral straitum

19
Q

Casey data

A

Quantitative data eg stimulation score on the questionnaire. Whether ate the cookie or not

But no info why their brains varied

20
Q

Casey validity

A

Lacks ecological validity. Uses fMRI scanning so possibly demand characteristics. Also go no go task is not real

21
Q

Casey reliability

A

Uses fMRI scanning and controlled

22
Q

Casey sampling bias

A

All 562 went to the same nursery but the future experiments had very small sample sizes. All from same area and time period

23
Q

Casey ethnocentrism

A

Impulse control might be different in other societies but this looks at brain function which is separate to culture

24
Q

Sperry + Casey similarity

A

Both lack ecological validity

25
Q

Sperry and Casey similarity

A

Both are highly reliable

26
Q

Sperry and Casey difference

A

Both collect quant but sperry also collects qual data

27
Q

Sperry and Casey difference

A

Sperry is quasi and Casey is lab

28
Q

Blakemore and Cooper aim

A

To test whether kittens raised in an environment of vertical or horizontal stripes would develop normal vision

29
Q

Blakemore and Cooper participants

A

Kittens 2 used in last experiment

30
Q

Blakemore and cooper research design

A

Lab experiment

31
Q

Blakemore and cooper procedure

A

Kittens are kept in complete darkness isolated for first 2 weeks Then kept in cylinder w either horizontal or vertical lines then till 5 months spent 5 hrs a day in it. Then put in bright lit room

32
Q

Blakemore and cooper results

A

Kittens had no startle effect
Could not move their paws down when on edge of objects

When shown vertical rod to kitten played with it but horizontal no response if raised in vertical setting

Kittens were overall more clumsy

33
Q

Blakemore and cooper conclusions

A

The changes in neuron and vision cortex was due to brain plasticity. Neurons matched sensitivity to the neurons recieved

34
Q

Blakemore and cooper data

A

Quant and qual data. Quant was the neurons shown being fired qual was describing the startle effect and ability to walk around

35
Q

Blakemore and cooper ethical

A

Not ethical
No consent
Cant withdraw
Psychological harm
Physical harm were killed

36
Q

Blakemore and cooper validity

A

Collar worn
Apparatus
Length clear floor
Lacks ecological validity

37
Q

Blakemore and cooper reliability

A

Lab experiment so high reliability

All kept in dark
Neurons showed the same
Only 2 kittens

38
Q

Blakemore and cooper sampling bias

A

Only 2 kittens

39
Q

Maguire aim

A

Investigating whether a job that needs navigational experience affects the volume of the hippocampus

40
Q

Maguire research method

A

Quasi experiment with lab conditions

41
Q

Maguire participants

A

16 right handed male taxi drivers
50 non taxi drivers

42
Q

Maguire Method

A

Psychology Core studies (4 decks)

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