The present collection of articles is based on data from the European Social Survey (ESS) and analyses the changes in European societies. The first part of the volume is devoted to relations between legitimization, subjective well-being, voting patterns, and the role of social cohesion in determination of political culture. The second part addresses methodological questions designed to quantify the reliability and validity of certain measures in interviews, coverage errors, measurement errors, and non-response, as well as the understanding of questions in multi-country surveys in the context of the comparability between countries.