Measuring what it takes to be a good doctor

Dr. Pauline Chen's Doctor and Patient column in last week's New York Times explores the tests that act as gatekeepers for those who would pursue a career in medicine. The tests are used, in part, to determine who has what it takes to be a doctor. But do these test miss some key component of personality when it comes to measuring who will be a great doctor? Or is knowing the right answers on a test more important than any measure of personality?