There are plenty of resources out there on applying for the NSF in other fields (sample proposals and stuff), but haven't found many in Economics. Do any of the community members here have suggestions for applying for the fellowship, particularly the personal statement piece of the app?

One of the things I've been told to emphasize is the 'Broader Impacts' of the project that go beyond the field of economics itself and into interaction with people in everyday life (so something beyond "this model has implications for policy"). If I'm writing a proposal where I present a specific model with a specific application, how would I write about something like that?