When I did the google search to find that link, I saw a link referring to the babies born around that time who have shown higher stress levels. Also, a little about the baby boom right after. I found it interesting, since I became pregnant on October 11 of that year (the world looked like it was going to end, and I suddenly wanted have a baby. go figure.) My first post-9/11 baby is the most headstrong of all my children. Just an interesting observation.