Frontmatter -- Contents -- Acknowledgements -- 1. Mapping the Terrain -- 2. The Current Empirical Study -- 3. Age and (Statistical) Analysis -- 4. Age and Rate of Acquisition -- 5. Age and Affect -- 6. Age and Crosslinguistic Influence -- 7.Age and the Impact of Differential Input -- 8. Educational Implications -- 9. Conclusion and Future Perspectives -- Appendices -- References -- Index