Best taken early in your dedicated period (4–6 weeks out). It tends to over-predict your score slightly but is a great confidence booster and helps identify major content gaps.
If you want to dive deeper, let me know: USMLE UWorld Step 1 Self Assessment Exams Solve...
Don't just look at why the right answer is right. Look at why the other four options are wrong. Best taken early in your dedicated period (4–6 weeks out)
Solving the questions is only 20% of the work; the other 80% is the review. the other 80% is the review.