Willem SarisWillem Saris became full professor in political science, especially the methodology of the social sciences in 1983. He worked at the University of Amsterdam until 2001. In 1984, he created the Sociometric Research Foundation in order to improv social science research by the application of statistics. In 1998, he became member of the methodology group that prepared the start of the European Social Survey (ESS). As a consequence, he was also member of the Central Coordinating Team of the ESS from 2000 to 2012. In 2001, he moved to Barcelona where he received a position as an ICREA professor at ESADE. He was also the director of the Research and Expertise Centre for Survey Methodology (RECSM) at the Universitat Pompeu Fabra from 2009 to 2013. He was one of the founders and the first chairman of the European Survey Research Association (ESRA).For detailed information see https: //en.wikipedia.org/wiki/Willem_Saris Read More Read Less