Surveys are a valuable instrument to find out about the social and political reality of our context. However, the work of researchers is often limited by a number of handicaps that are mainly two. On one hand, the samples are usually low technical quality ones and the fieldwork is not carried...

In 2007 the first Quality Enhancement Meeting on sampling in the European Social Survey (ESS) took place. The discussion focused on design effects and inteviewer effects in face-to-face interviews. Following the recomendations of this meeting the Spanish ESS team studied the impact of...