Thanks anuragbytes!
I see that you are interested in CR and the truth is that I always had my doubts with CR accuracy before and during the actual GMAT. I was not very sure of myself when it came to CR. I put a lot of effort for improving my SC and I was confident that I can do well with SC. And I knew RC was all about reading and grasping as much as possible in 4 mins. But CR was the culprit!
I read Powerscore CR Bible atleast 5 times. The content is all great and you understand everything but when you need to identify and apply those concepts, there's struggle. I was able to answer most of the practice questions in the book however during practice with
MGMAT and Grockit my accuracy dropped. I was scared at times that I might really screw up CR. And the inconsistent scores in my practice exams was no solace. I was really impressed with the Powerscore CR's "Method of Reasoning" chapter. Each type of reasoning actually provides how GMAT test makers can induce flaws and assumptions into their stimulus. I recommend that you read and understand each of these "types of reasoning" and it'll go a long way in helping you with other question types.
For CR - I highly recommend the following strategy.
1. Go through Powerscore CR bible - you'll understand what's being tested and for each question type, you'll understand how the right answers would look like and how INCORRECT answers would look like.
2. Use OG12 and the verbal reivew BUT first download the
error log for OG12 and Verbal review from gmatclub or beatthegmat.
3. In the error logs, ensure that the error category and the sub categories are filled in. That's the key to your analysis after completing the OG12 and Verbal Review.
4. I cannot insist enough why error analysis is so important. When answering questions, I used to put an *asterisk beside the question number that I was not confident about. It means, given the time, I wouldn't have been able to identify the correct answer. In the error logs, I added another column for these types of questions - the ones that I guessed or wasn't sure if I was right.
5. I combined the data from OG12 and the verbal reviews and built my own pivot tables for the charts that I wanted. I'm not sharing all the charts but if I did, you'd definitely think I'm crazy! The error logs are categorized the questions by difficulty. I WARN you - do not go with the difficulty given in the error logs. Some may find algebra easy and other may find arithmetic easy. ALWAYS create your charts by the CATEGORY & SUB-CATEGORY.
Remember that now I have a list with these criteria -
(i) No asterisk And Correct (which means that I answered confidently and was actually correct - Yay!!)
(ii) No asterisk And Incorrect (which means that I answered confidently but was actually wrong - dent on confidence! read the explanation properly.)
(iii) Asterisk And Correct (which means that I did not answer confidently but was actually correct - need to gain confidence so review the correct answer.)
(iv) Asterisk And Incorrect (which means that I did not answer confidently and was actually wrong - great! I know this question is difficult. More practice required.)
Now that you know what your weak areas are, try to focus on those chapters and practice more questions for those question types. I almost did the same for other sections too. See images attached. One of the images that shows the % correct/incorrect is based on the difficulty type (Easy/Medium/Hard) - I would NOT recommend creating this chart because difficulty could become relative after a lot of practice. (added this image with a subsequent reply because only 2 files are allowed per post)
And for SC idioms, I went through the idioms only during the last week. I realized early on (with
e-GMAT's advice) that GMAT really emphasizes MEANING rather than just idioms. So in the end you'll find atleast 2 options with the correct idioms. Ensure Parallellism! That's the key.
"...between X and Y.." is always easy to spot. The tough part is to identify whether X and Y are parallel (for example concrete nouns never go in parallel with action nouns, etc). So I recommend that you go through Manhattan SC parallellism concepts and apply it along with idioms.
Hope this helps!
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