Harry Potter author J.K. Rowling shocked the book world when she admitted she had written a book for adults under a pen name, Robert Galbraith. The science that uncovered her sleight of hand was just as surprising.
I have to admit that I have not read anything by JK Rowling nor I intend to. However, I find it interesting that there is a concept called "forensic stylogy", which is based on computational linguistics. Read about it in these few pages.
This is the interview with the Oxford scholar who figure this out:
and here is some detail on the analysis.
and here is a piece in nytimes about figuring out who wrote what email?
do we really have a fixed style of writing? or maybe a better question is: do good writers have a fixed "text-print"?
See on blogs.wsj.com