Same psychologist talking about Rudolf Höss, commandant of Auschwitz:

In all of the discussions, Höss is quite matter-of-fact and apathetic, shows some belated interest in the enormity of his crime, but gives the impression that it never would have occurred to him if somebody hadn’t asked him. There is too much apathy to leave any suggestion of remorse and even the prospect of hanging does not unduly stress him. One gets the general impression of a man who is intellectually normal, but with the schizoid apathy, insensitivity and lack of empathy that could hardly be more extreme in a frank psychotic.