On other thing I should have mentioned is that the entire session should be recorded on tape.

This is standard procedure because honest neuro-psychologists record sessions so that they can refer back to it while writing their report. Be suspicious of any tester who does not want to document your test this way. That tape is your best defense against an unfair interpretation of your results.

If they refuse to tape your session, tell them you're bringing your own recording equipment. If they object, insist on another tester. PROTECT YOUR INTERESTS.