Gave 7 practice tests..score went down from 600 to 420!

[amishi]

I took the GMAT last year and got a 540. Prior to taking the test, I had taken the Manhatten GMAT 9 week course and scored an avg of 620 in all their tests.
I gave up the hope of retaking the test until this year. Started off in Feb, retook the Manhatten GMAT 9 week course

Here are the scores of my 5 tests with Manhatten GMAT
2/27/08 -47 (Quant) + 32 (Verbal) 650
3/23/08- 46 (Quant) + 31 (Verbal) 630
4/18/08- 48 (Quant) + 33 (Verbal) 670
4/12/08 -36 (Quant) + 36 (Verbal) 600

Then I took a test downloaded from GMATPrep (mba.com)
5/1/08 - 41 (Quant) + 36 (Verbal) 620

Then I took 2 tests from 800score.com and was horrified with my results
5/12/08 - 34 (Quant) + 28 (Verbal) 510
5/20/08- 24 (Quant) + 24 (Verbal) 420

I have 4 days for my test and my performance seems degrading. I am very scared and don't know what to do next and how to prepare for the test.

Any advise will higly be appretiated.

[quantreview]

amishi - Don't worry. I'm taking the GMAT tomorrow for the first time. I was getting a little stressed and burned out from reviewing. My scores dropped a bit too. I found a good solution. I work from the answer section of the OG. Read the problem and try to conceptualize how you would answer the question, then read through answer. This method is less taxing on your mind plus you’ll gain confidence by seeing the solution and realizing you can do it. Hope this helps...and make sure you get a good night sleep.

[mayonnai5e]

800score.com cats are known to be fairly terrible. You can do a search for other posts to verify. On the other hand, MGMAT and GMATPrep are very well known and are considered by many to be the best cats available so I would put my faith in the scores you got from those exams over a bad cat that no one respects. Remember that a bad cat usually means a bad algorithm and bad algorithms lead to misleading scores.

Your MGMAT and GMATPrep scores are within 1 std deviation from each other so that really does appear to be your score range.

[Spence]

From what others have posted, 800score.com tests are not at all a good indicator of your abilities. So ignore those scores completely!

If you haven't taken any of the Princeton Review tests, there's a free one on their Web site, so do that. It's adaptive like the real thing and ought to help boost your confidence back up.

And do your best to relax before your test. You've been quite consistent in your scores. Good luck!!!!