[fjtorres]

Young-adult fiction or young adult literature (often abbreviated as YA),[1] also juvenile fiction, is fiction written, published, or marketed to adolescents and young adults, although recent studies show that 55% of young-adult fiction is purchased by readers over 18 years of age.[2] The Young Adult Library Services Association (YALSA) of the American Library Association (ALA) defines a young adult as someone between the ages of twelve and eighteen. Authors and readers of young adult (YA) novels often define the genre as literature as traditionally written for ages ranging from sixteen years up to the age of twenty-five, while Teen Fiction is written for the ages of ten and to fifteen.[3] The terms young-adult novel, juvenile novel, young-adult book, etc. refer to the works in the YA category.[4]

From Wikipedia.