Global Religious Diversity
http://www.pewforum.org/2014/04/04/global-religious-diversity/
Half of the Most Religiously Diverse Countries are in Asia-Pacific Region
Several years ago, the Pew Research Center produced estimates of the religious makeup of more than 200 countries and territories, which it published in the 2012 report The Global Religious Landscape. The effort was part of the Pew-Templeton Global Religious Futures project, which analyzes religious change and its impact on societies around the world. As part of the next phase of this project, Pew Research has produced an index that ranks each country by its level of 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 countrys 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.
The choice of which religious groups to include in this study stems from the original research that was done for The Global Religious Landscape report. That study was based on a country-by-country analysis of data from more than 2,500 national censuses, large-scale surveys and official population registers that were collected, evaluated and standardized by Pew Research staff and, in the case of European countries, by researchers at the International Institute for Applied Systems Analysis (IIASA) in Laxenburg, Austria.
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