Final answer:
A neuropsychological test assesses cognitive function and behavior, which can aid in understanding the functioning of different parts of the CNS, especially the cerebral cortex.
Step-by-step explanation:
A neuropsychological test primarily serves as a tool to assess cognitive function and behavior. It evaluates a range of cerebral functions, such as memory, orientation, language, and speech, which collectively provide insight into the functioning of different parts of the central nervous system (CNS).
The test includes components such as the mental status exam, which assesses higher cognitive functions linked to the cerebral cortex, and can aid in localizing function within the brain based on observed deficits.
While the test can also inform on neurological disorders and measure aspects of brain activity indirectly through cognitive and behavioral outputs, its primary aim is not to diagnose disorders or directly evaluate emotional well-being, nor does it measure brain activity in the same way as neuroimaging tools.