Chapter 1: Measurement issues relating to language questions in censuses and surveys.
Chapter 2: Language proficiency questions in censuses: The Republic of Ireland and the UK (Northern Ireland).
Chapter 3: Measures of language proficiency in large-scale surveys in the Republic of Ireland and Northern Ireland.
Chapter 4: Measures of language proficiency in an international survey programme: The Eurobarometer.
Chapter 5:Discussion and Conclusions.
Pįdraig Ó Riagįin is Visiting Research Fellow in the Centre for Language and Communication Studies, and Professor Emeritus of Sociology of Language at Trinity College Dublin, Ireland.