The Team


Directed by Javier Polavieja, the D-Lab assembles an excellent team of talented young researchers at various stages of their evolving careers

Javier Polavieja (Oxford University Ph.D. in Sociology, 2001) is Banco Santander Professor of Sociology at the Department of Social Sciences and Director of the D-Lab at Universidad Carlos III de Madrid. His main fields of research are social stratification, political sociology and migration research. His work has been published in leading international journals including, amongst others, the American Journal of Sociology, American Sociological Review, European Sociological Review, Social Forces, Socio-Economic Review, International Migration Review, Labour Economics, Political Behavior, Electoral Studies, Social Indicators Research and International Migration, as well as in the leading Spanish academic journals in the social sciences. In 2015, he was appointed Fellow of the European Academy of Sociology.

Javier Blanco García-Lomas is a programmer currently based at Toulon, France, as well as ICT Fellow at the D-Lab, UC3M. Since 2016, he has provided key professional services to the lab. Javier co-programmed SAdIE, the Scraping and Advanced Implementation Engine we use for our online field-experiments, and he is currently in charge of its maintenance and fine-tuning. He also provides expert technical advice on the online surveys carried out at the lab.



Javier Carrero Rodríguez is Research Assistant at the D-Lab as well as 1st-year student of the Master in Social Sciences at the Carlos III-Juan March Institute. His academic interests include social inequality, the welfare state, electoral behavior, and political communication. In addition, Javier collaborates with Politikon in "Consultas Ciudadanas" which is a project funded by the European Union and the Ministry of Foreign Affairs of Spain carried out in all European countries, with the purpose of formulating proposals for the construction process of the EU.



Fátima Ezzamouri is Research Assistant at the D-Lab as well as 1st-year student at the Master in Social Sciences, Carlos III-Juan March Institute. Her academic interests are focused on project management and design of public policies in matters related to gender and immigration, a field to which she would like to dedicate herself professionally as a consultant. In addition, Fátima is a collaborator of "Hijabi Plus" (the first magazine in Spain dedicated to Muslim women) and a mentor in Technovation Challenge.  

Maricia Fischer-Souan (PhD in Sociology, Universidad Carlos III de Madrid 2020) is a Research Fellow at the D-Lab.  Her research focuses on immigration in the European Union, both of EU and non-EU nationals, with special attention to issues of identity formation and motivations for migration. Maricia has collaborated in the Growth Equal opportunities Migrations and Markets project (GEMM), funded by the European Union.  She is experienced in qualitative fieldwork and data analysis with a specific focus on semi-structured interviews with migrants in France, Great-Britain, Germany, and Spain.

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Daniel Ramírez Smith (MA in Sociology and Demography, Pennsylvania State University 2016) is a Ph.D. candidate at the Department of Sociology and Criminology, Pennsylvania State University and a Research Fellow at the D-Lab, where he previously worked as a RA. His research focuses on social stratification, mortality, and immigration, with a special interest in how conflict and periods of crisis increase inequality. The current highlight of his work focuses on how disruptive events such as terrorist attacks shift attitudes towards immigrants. He is experienced in applied statistical analysis and demographic techniques.


Javier San Millán Tejedorith avier San Millán Tejedor is Research Assistant at the D-Lab as well as last year student of the Dual Bachelor in International Studies and Law at UC3M. His research interests focus on social inequalities, urban segregation and public policy. Javier has previously worked as an intern in the Directorate of Education of the OECD and has collaborated with the UC Berkeley Center of Community Innovation.

Former Research Assistants: Alejandro Arias, Mar Cañizares, Eric Castillo-Patton, Sara Dominguez, Irem Karaçau, and  Isabel Molero were UC3M students working part-time at the D-Lab; Victor Perez-Segura was full-time Lab Assistant;  Arturo Nieto is an external collaborator. RAs are valuable resources in the data production process. Their tasks involve, for example, monitoring the right functioning of SAdIE, attending and registering call-backs, formatting the data for posterior analysis and transcribing qualitative data.