jayesh99modi
My queries:
Are the questions on an RC passage fixed? (Is the RC as a whole easy/hard depending on our performance on the previous questions?)
If
YES, then
how is the next question after that RC chose ? (Out of 4 questions if I get first question correct and the remaining three incorrect in RC.
Or first three incorrect and the last one correct, then how is the next question decided?)
Thank you for the kind words,
jayesh99modi!
The question about RC is a good one, and I'm not 100% sure about the answer -- and as far as I know, GMAC has not publicly told us the answer to your question either, but maybe somebody can correct me on that.
There are two ways that the GMAT could, in theory, handle selection of your RC passages. The first is something called a "testlet": basically, the set of three or four RC questions is "fixed" for each passage in this scenario, so your answer to the first RC question does not impact the difficulty of the subsequent two or three questions on that passage. (And for whatever it's worth: in most cases, you'll see three RC passages with three questions each, and a fourth passage with four questions.) So if the GMAT uses "testlets" on RC, the difficulty of your entire passage would be based on your performance BEFORE you see that RC passage, because the RC questions for that passage would not "adapt" based on your performance within that passage.
The second possibility is that each RC passage actually has MORE than three or four possible questions. If this is the case, then each question after the first can be selected based on your performance WITHIN that passage.
Again, I don't have any inside information, but I suspect strongly that the second possibility is correct, since many of the RC passages in the OG (and GMATPrep Question Pack and Verbal Review) have more than three or four questions associated with them. Plus, some psychometricians (the statistician types who design standardized tests) aren't crazy about "testlets" (the first possibility, above) -- but that's a longer and much less interesting story. (Not-so-fun-fact: I spent two and a half years in a PhD program in psychometrics and education policy before I came to my senses and returned to teaching. So if anybody out there is having a hard time sleeping, I can tell you all about the three-parameter logistic model in computer adaptive testing, and you'll be knocked out instantly.)
In any case, there really isn't a big difference between those two ways of handling RC passages in terms of how they affect your score in the end. On an adaptive test, questions are selected based on your ENTIRE performance on the section up to that point -- so the difference between the two ways of handling RC would be very, very tiny in the grand scheme of things.
Sorry, that was probably a much longer answer than you bargained for!
The short short version: I think the test adapts after EVERY question -- even RC. But it doesn't really matter much, one way or another!