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The mind, or at least certain parts of it, may be organized independantly.
For example, if a theory states that reading and writing are simply different skills stemming from a single cognitive process, it should not be possible to find a person who, after brain injury, can write but not read or read but not write.
Through using this method, it is possible to discover whether a skill is handled by a single cognitive process or a combination of several working together. This selective breakdown in skills suggests that different parts of the brain are specialised for the different processes and so the cognitive systems are separable.
By understanding what a person can no longer do, and correlating this with a knowledge of exactly which parts of the nervous system are damaged, it is possible to infer previously undiscovered functional relationships.
LESION METHOD
METHODS OF COGNITIVE NEUROPSYCHOLOGY
NEUROPSYCHOLOGY
Evidence that cognitive skills may be damaged independently seem to support this theory to some degree, although it is clear that for some aspects of mind (such as belief for example) this is unlikely.
Ironically, Fodor (a strict functionalist) rejects the idea that the neurological properties of the brain have any bearing on its cognitive properties and doubts the whole discipline of cognitive neuropsychology.
JERRY FODOR
This uses many of the same techniques and technologies from neuropsychology and fields such as cognitive neuroscience. These may include neuroimaging, electrophysiology and neuropsychological tests to measure either brain function or psychological performance.
