1. A method for cognitive function assessment in a patient comprising: adapting a neuropsychological test to a computer format to present stimuli to the patient; simultaneously with the presentation of the test, recording a patient's electroencephalographic (EEG) activity using standard research level EEG equipment using particular bandpass settings that enable recording late-occurring “cognitive” event-related potentials (ERP) from a number of locations on a subject's head; manipulating the recorded EEG signals in order to examine each sample of recorded EEG and average together; applying a series of analysis algorithms that relate ERP data to obtained behavioral data in an interpretable manner; applying a series of analysis algorithms that permit interpretation of ERP within the context of the standardized test's framework even in the absence of behavioral data; and making prognoses of patient outcome using ERP data obtained using the computer-adapted neuropsychological tests.