The course introduces students to epistemological frameworks, social science methodological tools and fundamental criteria of research design. The goal is to raise awareness of methodological alternatives, fallacies and opportunities, and the implications of methodological choices. We will be discussing both quantitative and qualitative approaches, focusing on dilemmas that are common to both of them. The principal pillars of the course are: formation of theory and concept, argument-building, the identification of evidence, measurement, descriptive and causal inference, case selection, scope conditions, levels of analysis, longitudinal, comparative and case study research and field data collection. We will pay considerable attention to the trade-offs concerning various methodological approaches and to the possibility of their combinations.