Analysis of religiosity as a characteristic which may manifest in different degrees, higher or lower, relates both to the question of the very empirical existence of the phenomenon, i.e.
The actual application of religiosity indexes among the religious, as well as to the question of the theoretical value and methodological validity–that is, the heuristic functionality–of analyzing the measurability of religiosity.
There is an overlap between the scholarly interest in (“objective”) measurability and the religious impulse (subjective evaluation) to tackle the issue of religiosity levels. This topic receives less than its deserved attention in academic discussions of contemporary religion.
Taken from “On Religiosity and Super-Religiosity: Measures of Radical Religion”, By Prof. Gideon Aran