Very little concrete information is available in compact form about how data is collected across countries. Data collection modes and their potential in different contexts are only one set of issues. Systematic information on, for example, differences in interviewing techniques, in so-called "refusal conversion" and on contact requirements and contact protocolling are lacking for cross-national research. The work group will begin with a basic list of data collection issues and collect information on how these can be implemented in different socio-cultural contexts. Contact person This e-mail address is being protected from spambots. You need JavaScript enabled to view it , Gesis, or This e-mail address is being protected from spambots. You need JavaScript enabled to view it , Mannheim.