I need an idea for my EPQ question?!?

I am starting my Extended Project Qualification of a 5000 word essay and really want to do something psychology-related, but have no idea of a question to start with! I was thinking about something to do with the nature-nurture debate but think that it is maybe a bit too common and widespread to debate about...? Just wondering whether anyone has any other ideas for a question I can research into and debate about? Thanks.