<< The human subconscious is a scary place. It’s an invisible warehouse, full of ideas that many attempt to suppress and ignore. >>

implicit.harvard.edu/implicit/

I believe I read about tests like these in the (excellent) book "Blink". Possible caveat: test might be skewed because of association of "black-the-color" (not skin) with negative things like "blackhat", "black magic", "dark ages" etc. (whether that in itself is racism or rooted in former racism or rooted in something entirely else deserves analysis I guess). But I'm not sure, I didn't check the test yet...

I got "Your data suggest a slight automatic preference for European American compared to African American.", but this test is rather odd. First (and during most of the test) they try to make a connection in your mind between evil and afro-american, and then they check if you have this connection...

Same here, Ludwik... It's more like a reflection test IMO.

You can also find puzzles in Blink.
there are two ropes hanging each sides. if u stay near one rope u cant get the another.so the puzzle is u need to tie a knot between two ropes without using third rope .
   how do you get the second rope without moving from first rope. :-)