Introduction Dwight Atkinson Chapter 1: The Sociocultural Approach to Second Language Acquisition: Sociocultural Theory, Second Language Acquisition, and Artificial L2 Development James P. Lantolf Chapter 2: A Complexity Theory Approach to Second Language Development/ Acquisition Diane Larsen-Freeman Chapter 3: An Identity Approach to Second Language Acquisition Bonny Norton & Carolyn McKinney Chapter 4: Language Socialization Approaches to Second Language Acquisition: Social, Cultural, and Linguistic Development in Additional Languages Patricia A. Duff & Steven Talmy Chapter 5: A Conversation-analytic Approach to Second Language Acquisition Gabriele Kasper & Johannes Wagner Chapter 6: A Sociocognitive Approach to Second Language Acquisition: How Mind, Body, and World Work Together in Learning Additional Languages Dwight Atkinson Chapter 7: Discussion - SLA after the Social Turn: Where Cognitivism and its Alternatives Stand Lourdes Ortega