At the president’s request, Jackson said that he reviewed a number of cognitive tests and then administered the Montreal Cognitive Assessment during Trump’s first presidential physical exam on Friday afternoon at Walter Reed National Military Medical Center. The 10-minute exam is designed to detect mild cognitive impairment, generally in older patients. Trump answered all 30 questions correctly, Jackson said. The test includes asking a patient to name several animals, draw a clock with the hands at a certain time, copy a cube and recall a short list of words, among others. Jackson said he has “no indication whatsoever that he...