No, you are not. I think you can improve your score to at least 530 in a few days.

If I were on your situation, I would train on the verbal section, especially on the sentence correction questions. There are typical errors you can learn quickly: subject verb agreement, pronoun agreement, paralellism, etc.

Emma,

Same here..Just did GMAT Prep 1 after 3 months of study and got 490(Q34,V24)...I think am doomed..I have rescheduled my exam to 11th Dec from 4th.I hope to improve to 780 in my mock tests in the next 12 days...
Am sure we can do it..

I agree with the above. The best "last minute" study areas are sentence correction and basic math fundamentals, since those tend to be easiest for people to learn on short notice. Harder math and the other verbal sections take a lot more work.

Do you have the OG? You have more than enough time to do the SC section and the first half of the PS and DS sections. Spend some time analyzing every question you do for "takeaways" that you can apply on the real thing.

Good luck!

Jim,

I dont seem to get what i am doing wrong.My weak areas keep changing.
Been doing Kaplan CD CATs and my scores are on a downward trend.

Kaplan CAT1:510(Q34,V23)
Kaplan CAT2:500(Q27,V24)
GMATPrep1:490(Q34,V24)
Kaplan CAT3:480(Q25,V23)

I seem to be deteriorating instead of improving despite:

1.Maintaining flash cards for the questions i have gotten wrong
2.Using the Kaplan GMAT Premier and Princeton Review 2009 for strategies
3.Done OG 11 , first 50 questions for PS,DS,RC,CR and SC

Do you think i can improve in the next 12 days?My target score is 780
I tend to feel overconfident while doing the tests, only to see a pathetic score when i click 'View Results'

When you say that you've "done" the problems in the OG, what do you mean? There is little value in just doing problems. You should be analyzing every problem to find the best way to solve it, to see why the wrong answers are wrong, and to find some sort of "takeaway" or rule for every problem that can be applied to future problems. Just for comparison, when I studied for the GMAT I probably spent an average of 5 minutes working every problem. Some were quick, of course, and some took 20 minutes or more. It took me about 6 weeks to "do" the OG.

As for improving: yes, you can certainly improve in 12 days. The 780, however, may be a bit of a stretch. Remember that 780 is well above 99th percentile. Something like 1 out of 2,000 test takers will get a score that high. Many Veritas instructors, myself included, who have been teaching and studying the GMAT for years still haven't hit 780. You should definitely set your goals high, but don't be shocked when the score is something under 780!

Overconfidence tends to come from not seeing the "issue" in problems, so you feel like you knew what you were doing but got the problem wrong, anyway. The more practice problems you do (and by "do" I mean "analyze", as described above), the more of these issues you will see. In my experience, the better I get at the GMAT, the longer I take to do the test.