Spiral Dynamics (SD) is a model of the evolutionary development of individuals, organizations, and societies. It was initially developed by Don Edward Beck and Christopher Cowan based on the emergent cyclical theory of Clare W. Graves, combined with memetics as proposed by Richard Dawkins and further developed by Mihaly Csikszentmihalyi.

I am not saying in this conception of adult behavior that one style of being, one form of human existence is inevitably and in all circumstances superior to or better than another form of human existence, another style of being. What I am saying is that when one form of being is more congruent with the realities of existence, then it is the better form of living for those realities. And what I am saying is that when one form of existence ceases to be functional for the realities of existence then some other form, either higher or lower in the hierarchy, is the better form of living. I do suggest, however, and this I deeply believe is so, that for the overall welfare of total man’s existence in this world, over the long run of time, higher levels are better than lower levels and that the prime good of any society’s governing figures should be to promote human movement up the levels of human existence.