Hi, i am one of the neuropsychologist who perform the exams. I know pilots like to prepare for EVERYTHING but you really can not, nor do you need to prepare for one of these examination. I tell people it is like studying for a urine test, if everything is OK, it will just work and if not there is not much you can do to fix it before the exam. Best advice is get a good nights sleep and try to not be overly anxious. If you can, spend some time talking to the doctor about the evaluation so you will know what to expect. The exam is really just testing everything your brain does, which is why it takes so long.