Twenty years after its first publication, Susan Gass's Input, Interaction, and the Second Language Learner has become a classic text in the field of SLA. This new printing includes the original text with a new preface that comprises consultations between the author and Alison Mackey, Rod Ellis and Mike Long on the importance of the project today.

Susan M. Gass is University Distinguished Professor of Second Language Studies at Michigan State University, USA.

Preface to the 20th Anniversary Routledge Linguistics Classics Edition

Preface

Modeling Second Language Acquisition

The Question of Evidence

The Nature and Function of Output

Input and Second Language Acquisition Theories

The Role of Interaction

Comprehension, Output, and the Creation of Learner Systems

Epilogue: Classroom Implications and Applications