Young adult literature (YA) is typically written for readers aged 12 to 18[1][2] and includes most of the themes found in adult fiction, such as friendship, substance abuse, alcoholism, and sexuality.[3] Stories that focus on the challenges of youth may be further categorized as social or coming-of-age novels.
The earliest known use of term young adult occurred in 1942.[4] The designation of young adult literature was originally developed by librarians to help teenagers make the transition between children's literature and adult literature,[5] following the recognition, around World War II, of teenagers as a distinct group of young people. While the genre is targeted at adolescents, a 2012 study found that 55% of young adult literature purchases were made by adults.[6]
Wells
was invoked but never defined (see the help page).