I'll also note here that I'm planning to do some analyses of the calibration questions on the 2016 LW Diaspora Survey during the next month. I think that there are issues with some of the questions that were on the survey, so before I do any analyses I'll note that my preferred analyses will only include 4 of the questions:

Which is heavier, a virus or a prion?
What year was the fast food chain "Dairy Queen" founded? (Within five years)
Without counting, how many keys on a standard IBM keyboard released after 1986, within ten?
What's the diameter of a standard soccerball, in cm within 2?

For thoroughness I will also do some secondary analyses which include 7 questions, those 4 plus the following 3 (even though I think that these 3 questions have some issues which make them less good as tests of calibration):

I'm thinking of a number between one and ten, what is it?
Alexander Hamilton appears on how many distinct denominations of US Currency?
How many calories in a reese's peanut butter cup within 20?