Findings from PET and fMRI scans show that compared with younger adults, older adults _____.
A) are more likely to rely on the right hemisphere of the brain
B) experience greater decline in right hemisphere functioning rather than in left hemisphere functioning
C) use more parts of their brains, including both hemispheres, to solve problems
D) are less intellectually sharp but faster at information-processing tasks

Question

Quizplus · Accepted Answer

PET and fMRI scans show that as people age, they tend to use more parts of their brains, including both hemispheres, to solve problems. This may be a compensatory mechanism for declines in specific brain regions or functions. There is no evidence to suggest that older adults are more likely to rely on the right hemisphere or experience greater decline in right hemisphere functioning. There is also no evidence to suggest that older adults are less intellectually sharp, but they may experience slower processing speeds.

Findings from PET and FMRI Scans Show That Compared with Younger