Four readability tests performed on 12 issues of each of four super hero comic books: Wonder Woman, Superman, Fantastic Four, and The Amazing Spider-Man. It was originally done as part of a masters program in librarianship in 1977. One additional readability test was added in the update. The four readability tests were: Fry, Flesh, Dale-Chall, and the Fesch-Kincaid tests. In addition, the Flesch Reading Interest test was performed on each issue.