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9 Cards in this Set
- Front
- Back
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Aim |
To see if amphetamines affects PFC and WCST |
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Hypothesis |
Amphetamines will affect performance of PFC and WCST |
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Method |
Lab experiment |
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Sample |
10 chronic schizophrenics |
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Materials |
- amphetamine - placebo drug |
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Procedure |
- participants was given either dpse of an amphetamine or placebo drug - They completed WCST and bar task on a computer whilst in a SPECT scanner - 4 days later recompleted the test with opposite drug they had taken before |
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Results |
- no difference between both drugs when completing the bar task - amphetamine had a small but positive effect on the amount of questions answered correctly - small difference between both drugs in the WSCT as some areas of the prefrontal cortex were more active |
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Conclusion |
Amphetamines increased the ability of the prefrontal cortex to focus in WCST |
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Criticisms |
- cultural bias - cannot be generalised as there were not many participants |
