I had a car wreck April 2010. 1st Neuropych test October 2010 was about 5 hours long. 2nd test April 2011 2-3 hours as it retested the things I did below average.

I couldn't have drove myself home afterwards because my brain was so exhausted. Actually I was pretty much non-functional for several days afterwards.

Don't prepare. Just approach it as a normal (as normal as they get) day. That's where the true results will come in.

I'm sure my test results and that doctor's records are what made the car wreck insurance agree to 100% payout and receiving disability so fast (2 1/2 months from time of application with no attorney).