Centro de Investigaciones Sociológicas - CIS
Powers attributed to the CIS in accordance with article 3 of its Law and its Royal Development Decree
Organic structure established by the Royal Decree of the CIS for the exercise of its powers and holders of the different units
Set of rules that regulate the operation and structure of the CIS
Chronological list of the presidents of the Institute of Public Opinion (IOP) and the CIS since its foundation in 1963
National award granted by the CIS in the field of Sociology and Political Science for an academic career
The main activity of the CIS for the scientific knowledge of Spanish society is its Studies
Information on how surveys are carried out at the CIS
Main methodologies used by the CIS for conducting surveys and studies
Provisional results of the surveys prepared by the CIS
Complete collection of studies carried out by the institution, including the questions, series, and related documentation.
Integrated extraction of microdata from a set of variables for CIS studies
Public attention. Requests for information and tailor-made preparations
Comparative survey on the characteristics of citizenship in Spain
Rules and Legal Requirements for accessing and using CIS data
Access to all information regarding Publications made by the CIS
In-person and online sales of books published by the publishing unit
Dissemination of the most relevant research carried out in the field of social sciences
Open quarterly scientific periodical publication. Spanish Journal of Sociological Research. Submission of manuscripts
Compilation of the main data obtained through opinion barometers carried out over a year by this institution
Publications such as the Spanish Journal of Public Opinion (1965-1977) and dissemination of public opinion studies
Training scholarships for postgraduates wishing to take part in the scientific activity of the CIS
Grants to promote the use of the Data Bank and the completion of doctoral theses
Training courses in applied social research and data analysis for postgraduates, with tuition support
Access to the main transparency and good governance contents of the CIS
Public employment calls managed by the CIS
Access to the Ministry's Electronic Headquarters
Access to information on CIS data protection
Procedure for the ‘Initial Deposit Plan of R&D projects with social surveys’
Channel for reporting infringements in the field of actions of the bodies of the Center for Sociological Research
Preview of the results of study 3501 'Sexual and Relationships'
Madrid, 02 October 2025
The preliminary results of study 3501, 'Sexual and Couple Relationships' , are presented:
- Question frequencies
- Frequencies of questions crossed by sociodemographic variables : sex, age, size of municipality and level of education.
- Frequencies of cross-referenced questions by political variables : voting recall in the 2023 general elections.
- Frequencies of questions crossed by socioeconomic variables : subjective identification of class and occupation.
- Frequencies of questions crossed by belief variables : ideology and religiosity scale.
- Frequencies of cross-questions by relationship status .
- Complete documentation in Excel : results and cross-references.
Update: The study is now available for consultation: Go to study
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