When I was out on maternity leave, 23 years ago, two colleagues were out doing field work on my project. One was a senior researcher, the other a recent hire. The recent hire was sent out to learn the field from the senior researcher. When they appeared together, everybody ignored the senior researcher and directed their questions and answers to the junior. They also constantly asked whether my senior colleague was a nurse and whether my junior colleague was a doctor. Now guess what their respective genders were. Not hard to guess, huh? Both were social scientists -- excellent ones, though neither has a doctorate. One just got hired into a tenured associate professorship at a Dept. of Community Medicine -- ahead of an M.D. and Dr. Med. with an impressive publication list and a long list of projects and grad students at that very department. Want to guess again which of my former colleagues got the job and what gender the medical and academic doctor was who got passed by? Easy guess again, huh?

Think maybe you don't share those prejudices, that you somehow out of all the many millions within our culture have managed to unlearn them? Try taking a test or two at
http://www.understandingprejudice.org/iat/
It's fun, it's fast, it's anonymous and private, and you might learn something about yourself. I did.