The redesigned fourth edition of Second Language Acquisition retains the features that students found useful in the current edition but also provides new pedagogical tools that encourage students to reflect upon the experiences of second language learners. As with previous editions, discussion questions and problems at the end of each chapter help students apply their knowledge, and a glossary defines and reinforces must-know terminology. This clearly-written, comprehensive, and current textbook, by expert Sue Gass, is the ideal textbook for the introductory SLA course in second language studies, applied linguistics, linguistics, TESOL, and language education programs.