1. Definitions and guiding principles p.6. -- 2. Dimensions and measurement of bilinguality and bilingualism p.25. -- 3. Ontogenesis of bilinguality p.50. -- 4. Cognitive development and the sociocultural context of bilinguality p.82. -- 5. Social and psychological foundations of bilinguality p.110. -- 6. Neuropsychological foundations of bilinguality p.135. -- 7. Information processing in the bilingual p.162. -- 8. Social psychological aspects of bilinguality: culture and identity p.198. -- 9. Social psychological aspects of bilinguality: intercultural communication p.241. -- 10. Societal bilingualism, intergroup relations and sociolinguistic variations p.273. -- 11. Bilingual education p.318.