Translation and question format experiments: ESS 2006, ESS 2008, ESS 2010, ESS 2012, ESS 2014, EVS 2008, ISSP Pilot 2015

Over the years a variation of tests has been conducted within the various international surveys, as ESS, EVS and ISSP. Both at the international and national level tests regarding the wording of the questions and the response categories have been conducted. This study provides on overview of these language tests. Very often multiple tests are conducted on the same main question (versions A, B, etc), which are all included. More information on these variables is provided in the word document "Methodological data - Test variables_version 4".