A few weeks ago I blogged about a test that purported to tell you whether you are “right brained” or “left brained”. I have just spotted an update to this on the excellent Freakonomics blog. The smart thing is that they’ve actually done a rough and ready study of the results.

In my original post I said that I had the feeling that the author of the article got confused between the clockwise and anti-clockwise traits. Steven Levitt says he thinks so too.

Seemingly the test was, indeed, a load of bunk.