GMU Professor of Economics Daniel Klein teamed up with Zogby to conduct a poll to quiz people across the political spectrum on macroeconomics, measuring how many questions each person got wrong.

A response was counted as incorrect only if it was flatly unenlightened.

Consider one of the economic propositions in the December 2008 poll: “Restrictions on housing development make housing less affordable.” People were asked if they: 1) strongly agree; 2) somewhat agree; 3) somewhat disagree; 4) strongly disagree; 5) are not sure.

Therefore, we counted as incorrect responses of “somewhat disagree” and “strongly disagree.”

The other 7 questions, and their answers, are listed in the article. The professor and the pollster then tabulated how many answers each person got wrong, and broke them down by the respondent’s self-identified political leanings. The WSJ article is a little statistics-heavy and graph-free, which is a shame because the whole article boils down as follows: