Frontmatter -- Contents -- Acknowledgments -- Chapter 1. Contextualizing Critical Period Inquiry -- Chapter 2. Accounting for Universal and Individual Factors in Ultimate Attainment: Focus on Phonology -- Chapter 3. Verifying the Relative Strength of Maturation, L2 Experience and Psychological Orientation: The Quantitative Findings -- Chapter 4. Understanding Identity, Intention, and Opportunities for L2 Contact: The Qualitative Findings -- Chapter 5. Conclusions and Proposals for Future Research -- Appendix 1: Umfrage/Survey -- Appendix 2: Linguistic Tasks -- Appendix 3: Rater Survey -- Appendix 4: Rating Feedback Sheet -- Appendix 5: Semi-Structured Participant Interview -- References -- Index