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9 Cards in this Set
- Front
- Back
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What is a PET scan?
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-computer generated pictures of the brain
-radoiactive tracer is taken -emits radioactivity as glucose -positrons which are emitted turn into gamma rays -coloured images - red, yellow and green |
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What is a MRI scan?
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-uses magnetic and radio waves
-hydrogen atoms move back into position and the commuter turns these into pictures -black and white |
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Who was Phineas Gage?
What does he show? |
-american railway engineer who is remembered for surviving a fatal accident
-large iron rod went through frontal lobe - He shows that the frontal lobe does control behaviour, as his personality and behaviour changed after the accident |
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What is a twin study?
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-compares how similar twins are with their other town
-Can use MZ or DZ twins -measures the rate of concordance/rate of similarity |
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Why do Psychologists do twin studies?
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-If the rate of concordance is high we can say that it is genetic and if low we know it isn't
-Twin studies help to show whether a trait or behaviour is genetic or down to nurture |
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What is a concordance rate?
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-The rate of similarity
-measured as a percentage or decimal |
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What is an adoption study?
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-Test the effects of environment when no genes are shared
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What is an example of a twin study on Schizophrenia?
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-Gottesman and Shields (1966)
-concordance of 48% in MZ -'' '' 17% in DZ |
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Strengths of Twin studies
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-can see whether it's nurture or nature |
