Unit 3Defining Concepts of Second Language Acquisiton Page 2Contents First Language, Second Language, and Foreign Language Acquisition and Learning Interlanguage Competence and Performance Fossilization Language Transfer Input and Output VariabilityPage 3Competence and Performance nIt is a distinction introduced by Chomsky into linguistic theory but of wider application. Page 4Competence and Performance n Competence refers to a speakers knowledge of his language as manifest in his ability to pro
