Along with other notable skeptics like James Randi, Martin Gardner, Marcello Truzzi and Paul Kurtz, he was a founding member of the Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP) (which is now known as the Committee for Skeptical Inquiry (CSI)), which publishes the Skeptical Inquirer. He also developed a style guide and etiquette manual to assist skeptical writers and critics. This is called "Hyman's Proper Criticism" and proposes six steps that skeptics can use to upgrade the quality of their criticism.