20% of the score (6 points out of 30) were awarded because he could correctly state the date and what city he is in.http://washingtonpress.com/wp-content/uploads/MoCAScreenshot-1-794x1024.jpg
This is the test that the president scored "perfect" on. It's pretty clear that the test is designed for people with advanced alzheimer's who have difficulty making it through the day without assistance.
A spoiled man-child narcissist on the other hand would do perfectly well on the test.
But a perfect score proves beyond a doubt that he is a stable genius.