There is a Correlation between Child's IQ and Birthweight

I found an interesting, short article on Scientific American. There is a direct, positive correlation between birth weight and IQ scores for children at the age of seven. I am not sure if this is true or not, and will look into it, but if one assumes that larger babies have correspondingly larger brain mass, this would seem to make sense. A newborn is literally moving from one world into a brand new world, and will naturally be overwhelmed by the huge amount of environmental stimulus. More brain mass should allow the infant to better comprehend, learn and adapt over time. The effect is more pronounced for boys than for girls, but the effect is significant for both genders. There are several other related articles that can be linked to off this article, so I recommend checking those out if you are interested in this topic.