I like finding crossover references like this (which, by the way, is dated 2005). Most folks know, I'm sure, that it was Freud who came along and suggested Hamlet's issues with mommy. Here is a psychiatric view of that argument and more. As a matter of fact the article opens by crediting Freud with "persuasively answering" the question of Hamlet's delay. However it then goes on to question Freud's character-centric analysis, showing the positive side of examining interaction between characters rather than just individual motivation. I've got to sit down and read the whole 5 pages.