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;…

Populist radical right (PRR) parties have attracted anti-migration voters by claiming to serve the interests of nationally defined in-groups. Recently, several European PRR parties have shifted focus from protecting traditional values to protecting so-called modern Western values, including lesbian, gay, bisexual, and transgender rights. Here, we…

"Education Indicators in Focus" is a recurring series of briefs that highlight specific indicators in "OECD's Education at a Glance" that are of particular interest to policy makers and practitioners. They provide a detailed look into current issues in pre-primary, primary and secondary education, higher education, and adult…