Honours Dissertation

I’m picking a topic for my Psychology Honours dissertation next year and I’ve got so many options and interests that the overabundance of choice is near paralyzing. So in the interests of crowd sourcing and hopefully writing about something of substance, I’d like to hear suggestions for potential directions I could take. It can be any idea but one that frequently pops up on less wrong and needs further exploration or exposure would be ideal.

Basically feel free to offer suggestions but ideally I want something that (assuming I do it right) would help lay a part of the groundwork required to build up someones rationality.