A 1995 book by Hans Eysenck argues that a “personality trait” called Psychoticism is central to becoming a creative genius; and a more recent book by Bill Dorris (2009) looks at the influence of “everything from genetics to cultural crises”, including chance, over the course of development of those who attain greatness. See – Hans Eysenck, "Genius: The Natural History of Creativity" (1995), "construct(s)... a model of genius and creativity" whose "novelty lies in (its) attempt to make personality differences central to the argument".