Policy evaluation studies, which assess the effect of an intervention, face statistical challenges: in real-world settings treatments are not randomly assigned and the analysis might be complicated by the presence of interference among units. Researchers have started to develop methods that allow to manage spillovers in observational studies;…

Community integration of individuals with mental retardation in Treguier, Brittany (France) was examined. A grid-group typology of cultural regimes was employed to measure change in social status as reflected in social interactions. Each regime linked the presence of individuals with mental retardation to shared values in a community and produced…

In June 2003, the International Institute for Educational Planning (IIEP) organized its annual Policy Forum to discuss the impact of increasingly multi-ethnic and multicultural societies on education in general and the implications for educational planning in particular. The proceedings of this Policy Forum are presented in this volume. Part I,…