The Standardized GRE

The GRE is now only available as a computerized test. Instead of having a predetermined mixture of easy, medium, and hard questions, the computer will select questions for you based on how well you are doing. The first question will be of medium difficulty (500 level questions are halfway between 200 and 800). If you get it right, the second question will be selected from a large group of questions that are a little harder; if you get the first question wrong, the second will be a little easier. The result is that the test is self-adjusting and self-correcting to your skill level.

Harder Questions Count More
A result of the CAT testing format is that the harder problems count more than easier ones. If one student does twenty easy questions, half of which he gets right and half of which he gets wrong, and then another student does twenty very difficult questions, half of which he gets right and half of which he gets wrong, the second student will get a higher score.The student who answered ten out of twenty very difficult questions incorrectly would still get a very high score on the GRE CAT because the harder questions are more heavily weighted. Simpler questions might be easier to answer, but they count much less. Your goal should be to get as many hard questions right because that will get you your highest possible score.

Start Off Strong
The CAT puts much more value on the earlier questions than the later questions. The computer has to make large jumps in the estimation of your score for each of the first few questions. The later questions are used to fine-tune your score. To get the best possible score, focus more time on the earlier questions than the later questions. A skilled GRE test taker focuses on getting early, hard questions correct. Therefore, the optimal strategy for the CAT is to go extremely slowly and carefully at the beginning of the test.