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Summary Detailed notes for PET scans
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This PowerPoint contains in depth information about how PET scans are used in psychology and also some evaluation points are included to help you build your essay
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Advantages of PET scans• Advantages of FMRI scans
Shows functional activity of different areas of the brain.
• Can be used to compare with other brains to explain cause
• Shows functional changes of different areas o
of differences in behaviour.
• brain
Produces quantitative data.
• Can be used to compare with other brains to e
causes of differences in behaviour such as
Disadvantages of PET scans
Alzheimer's disease
• Produces quantitative data.
• Often involves a task which is unrealistic and therefore, low
in ecological validity.
• Disadvantages of FMRI scans
Done in a controlled lab setting so may not reflect the brain's
activity in the real world.
• Often conducted in controlling setting and so
• Subjectivity in terms of the interpretation of the scan.
be low in ecological validity.
• Requires interpretation= subjective
Advantages of CAT scans
• Shows structural changes of different areas of the brain.
• Can be used to compare with other brains to explain causes
of differences in behaviour
• Produces quantitative data
Disadvantages of CAT scans
• Only produces an x-ray image in black or white
• Doesn’t show functional differences
• Requires interpretation= subjective
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