1. Introduction Graeme Porte; Section 1. Theoretical Background: 1. Why (or why not), when and how to replicate research Alison Mackey; 2. Significance tests and the generalizability of research results: a case for replication Hossein Nassaji; 3. Replication, meta-analysis, and generalizability Luke Plonsky; Section 2. Replication Studies in Graduate Programs: 4. Practical methods for integrating replications into linguistic graduate programs Rebekha Abbuhl; 5. Conducting replication studies: lessons from a graduate programme Tess Fitzpatrick; Section 3. Replication Studies in Practice; 6. Replication in published applied linguistics research: an historial perspective Charlene Polio: 7. Writing up a replication report James Dean Brown; 8. Negotiated interaction in the L2 classroom: an approximate replication study Johannes Eckerth; 9. The effect of task-induced involvement on L2 vocabulary acquisition: an approximate replication of Hulstijn and Laufer (2001) Susanne Rott; 10. Concluding remarks: The way forward Graeme Porte; Index.