Staatsexamen, University Regensburg, Germany, 1970. Doctor of Philosophy, University Regensburg, 1977. Habilitation, University Regensburg, 1981.
Professor linguistics University Bremen, Germany, since 1981.
Member of German Association Semiotics, Society Linguistica Europea, Association Applied Linguistics, German Association Linguistics (director, member advisory board 1981-1983, treasurer 1981-1982).
Married Heidemarie Welsch, May 19, 1970. Children: Gregor, Ivo, Quirin.