I agree 100% with the interview idea. I have a friend who is doing a neuro science phd and his process was a lot harder - he had to get invited to interview at schools, then go through rigorous interviews and THEN he found out if he got in or not. I think it really helped him pick the best program for him / make sure he really wanted it - on top of helping the programs to decide. I only interviewed at GWU, and that wasn't even a true interview (it was more like a group conversation with two prospects and one professor).