Introduction to Instructed Second LanguageAcquisition written by Professor Shawn Loewen presentscomprehensive introduction of the theories,empirical researchesand pedagogical practices related to instructed second languageacquisition from the cognitive-interactionist perspective.It is abook of profound theories explained in simple language suitablefor researchers,educational practitioners and second languageacquisition majors to read.This article summarizes the mainidea,the strength...