The CIS regularly takes part in research projects of an international nature, such as the surveys of the ISSP (International Social Survey Program), the Latinobarómetro, as well as other one-off projects. It has recently begun to work under a collaboration agreement to carry out the European Social Survey in Spain.

The ISSP is an ongoing collaboration programme between over forty countries world-wide, to carry out an annual monographic survey on one topic, with the same questionnaire and a methodology agreed by all the participant countries. Spain is represented in this programme by the CIS and ASEP, which alternate yearly in taking the ISSP survey in Spain and they are active participants in a range of internal working committees (www.issp.org).

Para acceder a los datos de las encuestas anuales de los demás países participantes, pinche aquí 

The Latinobarómetro is a study designed and directed by Corporación Latinobarómetro, which is carried out in 18 countries in Latin America. Since 1996 it has also been carried out in Spain www.latinobarometro.org).

The European Social Survey is a comparative, longitudinal study carried out every two years, involving around 30 European countries. Its main aim is to analyse change and continuity in the social and political attitudes, attributes and behaviours of European citizens. The ESS is sponsored by the European Science Foundation and is supported by a number of European and Spanish public institutions. The ESS co-ordinator in Spain is Mariano Torcal (Political Science Professor, Universitat Pompeu Fabra) (www.europeansocialsurvey.org / http://www.upf.edu/ess/presentacion/)