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 Feedback Sheet -- Appendix 5 Semi-Structured Participant Interview -- References -- Index.