ABSTRACT
When considering the physiological and phenomenological correlates of religious and spiritual practices and experiences, there are several important principles required to guide the investigation. To begin, it is important to recognize the mutual requirement of understanding both the phenomenological and physiological correlates. Without understanding both aspects of any particular experience or practice, the information that one obtains is far less useful. This leads us to the first principle in this regard:
Principle XXVIII: Both phenomenological and physiological information are required for the full understanding of any religious experience or practice.
