This 2-day workshop will introduce students to different methods of collecting data in the social sciences. Surveys are the most common form of collecting primary data in many disciplines, and this course will provide students with an overview of interview-administered (face-to-face and telephone) and self-administered (mail, web, mobile web, and SMS) survey data collection as well as the combination of multiple modes (mixed mode surveys). The course will in particular discuss the implication of survey design decisions on data quality. In addition, students will also receive an overview on alternative data sources (e.g., passive measurement, social media and administrative data) and how they can be used in combination with traditional survey data.