PreTest is the medical student's most dynamic weapon for mastering the USMLE Step 2 Great for course review and clinical rotations, too! Psychiatry: PreTest asks the right questions so you'll know the right answers. PreTest is the closest you can get to seeing the test before you take it. Key features 500 USMLE Step 2 format questions covers what you really need to know to pass the shelf exam Explanations for correct and incorrect answer options Written by a psychiatry clerkship faculty and student tested and reviewed.