It is shown in this article that many positions that are usually considered incompatible or antagonistic can be synthesized into a unified framework, creating a model of transpersonal development based around plurality and complexity. The model focuses on evolutionary developmental biology as well as around psychological theories. A large degree of variability in the nature of transpersonal experience in the life cycle is to be expected, due to differences in both the “timing of onset” of transpersonal characteristics and the “length (...) of developmental period.” Numerous developmental patterns are identified, using the work of some prominent transpersonal theorists. (shrink)