Lack of religious conviction or activity may be marked by a lack of church attendance or other observance of religious customs, but does not necessarily mean that people leave their nominal church; they may remain within it but simply not practice religion in any particular form. Religious apathy may also be taken to mean an unquestioning attitude towards religious doctrine.
Lack of outward religious conviction but nominal adherence to a religion is widespread in Western industrialized countries. An unquestioning acceptance of religious doctrine is found particularly among poor people in developing countries.