It's moderately useful to be able to separate out PhD candidates from people that have just gotten Bachelors or Masters degrees, but I'm not sure it makes sense to clump them with people who have finished their PhDs, given the somewhat low survival rate.
More useful I'd say to filter those perusing bachelors degrees (me) from those who did not attend college after high school. There are gaps at other levels as well.
I have finally gotten the survey to a point where I'm pretty happy with it. I have no big changes I want to make this year. But as is the tradition, please take a week to discuss what minor changes you want to the survey (within the limits of what Google Docs and finite time can do) and I will try to comply. In particular, we can continue the tradition that any question you request can be added to the Extra Credit section unless it's illegal or horribly offensive.
You can find last year's survey results here and you can find the very preliminary version of this year's survey (so far exactly the same as last year's) here.
EDIT: I don't particularly like the IQ test or the Big Five test used last year. If you have any better replacements for either, tell me and I'll put them in.
EDIT2: CFAR, you added seven questions last year. Let me know what you want to do with those this year. Keep them? Remove them? Replace them?