Do you know if baby size at birth is correlated to higher intelligence later in life? Also, what about the amount of hair a child is born with? Any correlation there?

This is a paper by an eminent researcher in the discipline (I have read one of his books and have another at hand) that I Googled up:

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi...

Thank you! Through your link, I gathered a few keywords and found this: http://www.bmj.com/cgi/content/full/322/7280/199

Birth weight was also associated with education, with those of higher birth weight more likely to have achieved higher qualifications, and this effect was accounted for partly by cognitive function at age 8.

Small size at birth is associated with a range of adverse health outcomes, including poor cognitive development, an effect that is largely unconfounded by features of the family environment, such as socioeconomic status and birth order.