1. Introduction / ZhaoHong Han and Terence Odlin -- 2. Researching fossilization and second language (L2) attrition : easy questions, difficult answers / Constancio Nakuma -- 3. Establishing ultimate attainment in a particular second language grammar / Donna Lardiere -- 4. Fossilization : can grammaticality judgment be a reliable source of evidence? / ZhaoHong Han -- 5. Fossilization in L2 and L3 / Terence Odlin, Rosa Alonso Alonso, and Cristina Alonso-Vázquez -- 6. Child second language acquisition and the fossilization puzzle / Usha Lakshmanan -- 7. Emergent fossilization / Brian MacWhinney -- 8. Fossilization, social context, and language play / Elaine Tarone -- 9. Why not fossilization / David Birdsong -- 10. Second language acquisition and the issue of fossilization : there is no end, and there is no state / Diane Larsen-Freeman.