So a very strange thing happened in my recent GMAT attempt. The night before my exam, I went to bed at 11 pm but couldn't sleep till 1:30-2:00 am. My sleep was interrupted at 7 am from some noise outside my apartment, and unfortunately I couldn't sleep at all after that. My test was in the morning at 11 am so I got ready and headed to the test center. I tried doing a few Quant questions for warm up before the test. It felt a little weird while I was solving some simple quant questions- I felt like I wasn't able to do simple basic calculations. I ignored all that and tried to stay positive.
I opted for Q-V-IR-AWA order. As soon as quant started, again I started to see that I was having a really hard time doing simple questions. I literally couldn't focus at all and ended up skipping a LOT of questions. My final quant score was 45. I knew I screwed up my quant section but I still tried to remain focused on Verbal. Again I was having a hard time comprehending some really long RCs. As a result, I performed really bad in RC, which is my strength. I ordered ESR and I got a RC 27, with a V 31 and 620 (Q45,V31) overall score. Even in
MGMAT CATS my lowest score was 660, so this is really disappointing.
Can lack of sleep really drop your score by more than a 100 points?