President Obama is Headed for an Exclusive Form of Small Group Therapy, or a Psychotic Episode

As noted here in The New Republic by a psychoanalyst, who never once suggests Obama's cool demeanor, detachment from emotion, and passivity are also characteristic of psychosis and might have been compounded by his drug use:

As sensitive he is to group dynamics, as the President of the United States, he is now the sole member of an exclusive group of one.  And he's going to need to push through his fears in order to avoid joining the only other group available to him—that of the ex-presidents.