Hi Wisconsin92,
"Review" is an exceptionally important part of the GMAT training process; your ability to define WHY you're getting questions wrong is essential to defining the areas that you need to work on (and the specific things that you need to 'fix'). While a full Mistake Tracker/
Error Log would provide a lot more information, there are some basic questions that you should be able to answer after you take each CAT (and the more EXACT you can be with your answers, the better):
After reviewing each section of a CAT, how many questions did you get wrong....
1) Because of a silly/little mistake?
2) Because there was some math/verbal that you just could not remember how to do?
3) Because the question was too hard?
4) Because you were low on time and had to guess?
5) How many Verbal questions did you 'narrow down to 2 choices' but still get wrong?
There are a variety of different Mistake Trackers that you can use to document your studies, but those general ideas (above)should help you to hone your skills as you continue to study.
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores for each)?
4) What is your goal score?
GMAT assassins aren't born, they're made,
Rich