During the final week, really reading into the topics of the NBME questions you get wrong is essential.
On the real deal, the questions you get wrong will be comparable to those you're getting wrong on the NBMEs. Fact.
We all like to believe that we'll magically snap into ultra-human mode on the real USMLE and get everything right.
The truth is, three of the "stupid errors" I had on my real USMLE were on topics I'd gotten wrong on the latter NBMEs (11-13). One question that I almost got wrong on the real deal was in a topic I had also struggled with on the NBMEs.
If you get a question wrong on one of the NBMEs regarding tropical diseases, for instance, spend a true 20 minutes thinking about the highest-yield ideas in that category and ask yourself whether you know those concepts 1000%. Don't just think about doing this. Actually do it. If you want those few extra points in the end, you need to close the gaps in your knowledge. Your incorrect NBME questions are your ideal bridge through which to accomplish this.
Similarly, if you've noticed that you're getting some neuroanatomy or drug overdose/withdrawal questions wrong on the NBMEs, out of the small handful of questions you get wrong on the real deal, one or two of the questions will be in at least one of those categories.
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For me, I had been getting neuroanatomy, tropical disease and illicit drug-use questions wrong on my NBMEs (I noticed this pattern over all ten NBMEs = 2000 questions), and on the real deal, I got a question wrong in each of these respective categories.