Frontmatter -- Contents -- About the Authors -- Introduction -- Part 1: Multilingualism in Society and Education -- Lecture 1: What is Multilingualism? -- Lecture 2: Applied Linguistics and Multilingualism -- Lecture 3: The Psycholinguistics of Multiple Language Learning and Teaching -- Lecture 4: Educational Policy and Multilingualism -- Part 2: Aspects of Individual Multilingualism -- Lecture 5: Multilingual Individuals -- Lecture 6: Cross-linguistic Infl uence and Multiple Language Acquisition and Use -- Lecture 7: Motivation and Multilingualism -- Lecture 8: Age and Multilingualism -- Part 3: The Psycholinguistics and Neurolinguistics of Multilingualism -- Lecture 9: The Psycholinguistics of Multilingualism -- Lecture 10: The Neurolinguistics of Multilingualism -- Part 4: Forms of Multilingualism in the Past and Present -- Lecture 11: Historical Multilingualism -- Lecture 12: Receptive Multilingualism -- Subject Index