Socorro, Portugal
The fast globalization of the second half of the 20th century and the advent of new demographic and migratory trends have awakened the social sci-ences to the growing complexity of regional cultural dynamics. Social scientists have begun to associ-ate cultural diversity with modernity, predicting it as an inescapable and perennial condition of modern societies that affects, and is affected by, religious phenomena. However, few systematic, in-depth empirical researches have been made to as-sess these assertions. Thus, our paper puts forward the formulation of a diversity index (independent variable) based on four dimensions —linguistic, ethnic, religious, and place of birth— that is cor-related with a (dependent) variable of individual religiosity. We conclude that, for the set of Europe-an countries and for the time period under analysis (1999-2014), theories of cultural diversity that link diversity to the displacement and recomposition of religiosity have no empirical validity.