Psychologists Using Psychological Challenge Studies Examine Brain Functioning Through PET

Psychologists using psychological challenge studies examine brain functioning through PET scans of people affected by a disorder and of those not affected by it. For obsessive-compulsive disorder studies, this technique would

A) question participants in order to activate certain portions of the brain.
B) measure differences in response times for object recognition.
C) present subjects with contaminated objects and note differences in brain activity.
D) engage participants in storytelling in order to identify underactivated brain areas.

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