Don Yoder argued that there were five separate ways of defining folk religion. The first was a perspective rooted in a cultural evolutionary framework which understood folk religion as representing the survivals of older forms of religion; in this, it would constitute "the survivals, in an official religious context, of beliefs and behavior inherited from earlier stages of the culture's development". This definition would view folk religion in Catholic Europe as the survivals of pre-Christian religion and the folk religion in Protestant Europe as the survivals of Medieval Catholicism. The second definition identified by Yoder was the view that folk religion represented the mixture of an official religion with forms of ethnic religion; this was employed to explain the place of folk religion in the syncretic belief systems of the Americas, where Christianity had blended with the religions of indigenous American and African communities.
