Page "Reading education in the United States" Paragraph 44

Children who are exposed to large amounts of print often have more success in reading and have a larger vocabulary to draw from than children who see less print.

The average conversations among college graduates, spouses or adult friends contain less rare ( advanced ) words than the average preschool reading book.

Other print sources have increasingly higher amounts of rare words, from children's books, to adult books, to popular magazines, newspapers, and scientific articles ( listed in increasing level of difficulty ).

Television, even adult news shows, do not have the same level of rare words that children's books do.