Frontmatter -- Contents -- 1. Multilingualism from Multidisciplinary Perspectives: Introduction and Overview -- Part I: Societal Multilingualism: Historical, Political, Economic and Educational Forces in Different World Regions -- 2. Multilingualism, Language Varieties and Ideology in North Africa -- 3. Multilingualism in Southeast Asia: The Post-Colonial Language Stories of Hong Kong, Malaysia and Singapore -- 4. Multilingualism in Europe -- 5. Multilingualism in North America -- Part II: Language Use in Multilingual Communities -- 6. Diglossia in Multilingual Communities -- 7. Codeswitching in Multilingual Communities -- 8. Receptive Multilingualism -- 9. Multilingualism in Signing Communities -- Part III: Individual Multilingualism: From Development to Loss -- 10. Fostering Multilingualism in Childhood -- 11. Family Language Practices in Multilingual Transcultural Families -- 12. Multilingualism through Schooling -- 13. Language Attrition in Multilinguals -- Part IV: Differences between Bilingualism and Multilingualism -- 14. Facilitated Language Learning in Multilinguals -- 15. Cross-linguistic Interaction and Multilingual Awareness -- 16. Multilingualism and Cognitive Benefits in Aging -- 17. Multilingual Language Processing and the Multilingual Brain -- 18. Conclusion and Directions for Future Research -- Index of Key Words -- Index of Languages / Language Families -- Index of Countries and Continents