The use of field experiments in the social sciences has greatly increased over the past twenty years. These methodological advances can also be used to improve our understanding of religious life. This talk will describe some ways that randomized experiments can help answer important questions regarding religious preferences and every-day decisions. It will also provide an example from an experiment implemented in Jordan that tested whether a dearth of Islamically permissible lending options contributed to low levels of financial inclusion. The study also explores the ability of different types of religious institutions to impart authoritative approval to new financial products.