We find it fascinating to hear Mary Trump talk about her uncle.  A trained psychologist and close family member, she has given us insight into why Donald Trump behaves the way he does.  Wednesday night, she appeared on The Late Show to talk more about her book Too Much and Never Enough: How My Family Created the World’s Most Dangerous Man. The book debuted this week at #1 on the New York Times bestseller list. The president’s niece talked to Stephen Colbert about Donald Trump’s recent claim that he took a cognitive test saying that “as far as I’m concerned his talking about it, the way he’s talking about it is failing the test.” She also said this about her claims that he is a sociopath:

“Donald has so many pathologies and they are so complex and so much co-morbidity… clearly he doesn’t seem to be interested in empathy so I think it’s safe to say, sure he demonstrates sociopathic tendencies and it’s equally safe to say that he is not high functioning at all and that is something that should give every person in the country pause. I mean, we are talking about a man who I do not believe could function in the real world on his own… A crucial reason that he’s gotten as far as he has is because he’s continually protected by what I consider institutions… he’s never been held accountable.”

Watch more above.