An argument could be made that the resistor lattice is a "specific knowledge" test of electricity, and that mastermind is a specific knowledge test in combinatorial logic.

What type of knowledge are you looking to assess specifically? Economics and education policy are particularly troubling to assess objectively (I'm a fan of the Austrian school, but there are a few smart Keynesians, for instance). How do you assess economics knowledge? What sort of questions would you ask?