Gender reading habits

It appears that men and women have different reading habbits from a young age. Males tend to read more comic/superhero type books and females read more "girl-friendly" romantic readings.
Guys are usually more likely to collect the comics. Also, girls are liking comics increasingly.
Here are 2 links to boys and girls readings:

http://www.comixology.com/articles/41/Gender-and-Reading-Habits-Part-One-Lets-Hear-it-for-the-Boys


http://www.comixology.com/articles/43/Gender-and-Reading-Habits-Part-Two-Lets-Hear-it-for-the-Girls