Wolfgang Butzkamm

Wolfgang Butzkamm (born 11 November 1938) is Professor Emeritus of English as a foreign language at Aachen University, Germany. He is credited with the development of a principled and systematic approach to the role of the mother tongue in foreign language teaching which radically differs from a target-language-only philosophy prevailing in many countries. For him, traditional monolingualism is an instance of a more general naturalistic fallacy which is committed when foreign language teaching is modelled after the natural acquisition of a first language (L1), as in the direct method (education) which was also called the natural method. Provided by Wikipedia