Gender bias has been discovered in a survey of children's books from 1900 to 2000. Apparently "males are central characters in 57 percent of children's books published per year, while only 31 percent have female central characters." Since that is only 88%, what on earth are the other 13%?
ps: grrrr, once again my link is not showing itself. Click on 'Gender bias' for the link to the full article.