This question has been asked and answered multiple times,you'll find a number of threads that will thoroughly answer your question. There's even a recent thread for this year's applicants that has been answered by fellow applicants as well as current students. You should check it out.
But if you want an answer to your question,no. It's largely behavioural but they're very thorough in understanding your resume,past experiences and expectations from the program - career goals,etc.