FAKKIR.XYZ | JURNAL – Religion has a two-way interaction with political economy. With religion reviewed as a dependent variable, a central question is how economic development and political institutions affect religious participation and eligion has a two-way interaction with political economy. With religion beliefs. With religion viewed as an independent variable, a key issue is how religiosity affects individual characteristics, such as work ethic, honesty and thrift, and thereby influences economic performance. In this paper, we sketch previous studies of this two-way interaction but focus on our ongoing quantitative research with international data.