Following an introduction by Anthony Liddicoat on the general nature of bilingualism, three papers on the characteristics, development, and advantages of bilingualism are presented. "Psycholinguistic Aspects of Bilingualism" by Susanne Dopke, Tim Macnamara, and Terry Quinn considers the linguistic, cognitive, emotional, and educational development of the bilingual individual and the social psychology of bilingualism. "Sociolinguistic Aspects of Bilingualism: Bilingualism and Society" by George Saunders looks at bilingualism in its social context and the linguistic and social factors influencing attainment and maintenance of bilingualism. Emphasis here is on the situation of bilinguals in Australia. "Bilingual Education" by Marta Rado focuses on bilingual education as an effective way of developing bilingualism. Much of the discussion here is relevant to language teaching and describes models for bilingual education used in major English-speaking countries. (Contains approximately 300 references.) (MSE)