CSIC (Spain) Researcher.

His theoretical concerns are focused on the adaptation of political actors and institutions to changing social demands, as well as on the role of interests and identities in the definition of actors strategies.

Most of his research projects have been financed by the Spanish Ministry of Education and Science. He has taught doctoral courses at the Complutense and Autonomous Universities of Madrid, the University of the Basque Country and the University of Santiago de Compostela.

Since May 2004 until April 2008 he was the director of the Department of Analysis and Studies in the Office of the President of the Spanish Government.

Currently he is the director of the Latin American program at the University Institute "Ortega y Gasset" and the International University of Andalusia. He is Director of the social sciences journal Zona Abierta, and member of the Editorial Board of Revista Internacional de Sociología.

Recent works:

"La derecha en transición" Nexos 355:23-27, July 2007
"El discurso de la izquierda española", Umbrales 1:9-20, March 2007
"Historia contemporánea de América Latina", vol.6, 1980-2006
"Reformas económicas y consolidación democrática " (con M.Alcántara, F.Freidenberg, y J.Déniz), caps. 1
"Crisis y cambio del modelo económico" y 2
"Nuevos actores y viejos problemas", 9-44 y 45-84, Madrid: Síntesis, 2006
"Giro a la izquierda y regreso del populismo", Nueva Sociedad 205:62-74, 2006.

He is member of the Advisory Committee of FRIDE.