Global Religious Diversity
Comparing religious diversity across countries presents many challenges, starting with the definition of diversity. Social scientists have conceived of diversity in a variety of ways, including the degree to which a society is split into distinct groups; minority group size (in share and/or absolute number); minority group influence (the degree to which multiple groups are visible and influential in civil society); and group dominance (the degree to which one or more groups dominate society). Each of these approaches can be applied to the study of religious diversity.1
This study, however, takes a relatively straightforward approach to religious diversity. It looks at the percentage of each country's population that belongs to eight major religious groups, as of 2010.2 The closer a country comes to having equal shares of the eight groups, the higher its score on a 10-point Religious Diversity Index.
Read the full article at the Pew Resarch Center's Religion & Public Life Project.