GMATPREP Free tests Vs Paid Tests - Reliability?

Hi gmat730must,

The 'accuracy' of a CAT score is based heavily on how realistic YOU choose to make the CAT-taking process. If you skip sections, pause the Test, take it at home, take it at a different time of day as your Official GMAT, do anything else that is unrealistic, etc., then your score is likely to be less accurate. As you score at higher-and-higher levels, the GMAT also becomes more and more 'sensitive' to little mistakes, so making just a few (in certain spots) can significantly impact your score. Remember that there are only 78 total questions between the Quant and Verbal sections (and a number of them are 'experimental', meaning that they do NOT count towards your score), so when you review a CAT you should take careful note of WHY you're getting questions wrong. If you're missing out on some easy points because you made some silly mistakes, then fixing those mistakes will be essential to locking in a higher score.

GMAT assassins aren't born, they're made,
Rich