Larry Selinker is professor emeritus of linguistics at the University of Michigan and former director of the university's English Language Institute.[1] In 1972, Selinker introduced the concept of interlanguage, which built upon Pit Corder's previous work on the nature of language learners' errors. Corder's and Selinker's work became the foundation of modern research into second-language acquisition, and interlanguage is accepted as a basic principle of the discipline.[2]