 His contributions to linguistics have been in the area of phonology, historical linguistics, and cognitive science.Along with colleague Mark Hale, he is a proponent of substance-free phonology, the idea that phonetic substance is inaccessible to phonological computation (see paper 'Substance abuse and dysfunctionalism').1984 All-Pro Team

The 1984 All-Pro Team is composed of the National Football League players that were named to the Associated Press, Newspaper Enterprise Association, Pro Football Writers Association, Pro Football Weekly, and The Sporting News in 1984.