This indicator stems from a question included in the European Social Survey on human values in which respondents were asked if they think that the cultural life of their country is undermined or enriched by immigrants. The answer categories are the following: Undermined, Enriched and Neutral. Income level is presented in quintiles: incomes have been divided into five parts that are equal in percentage terms (which group together 20% of the income) giving rise to five quartiles. If the first quintile includes citizens with the lowest incomes, the fifth quintile includes those with the highest incomes. The education level is presented in three groups associated with ISCED codes: Low (ISCED 1 and 2), Middle (ISCED 3 and 4) and High (ISCED 5 or higher).