I just took this test from the BBC-science page. Very interesting. I was actually a little surprised by how well I did. I only missed three of 20, and they were the first three. I knew I’d gotten the first two wrong after I selected them. So, go have a look and see how you do. Afterwards, come back here and post your results.
You can take a look my my results by clicking below, but don’t do it until you’ve taken the test–it would be cheating otherwise!