A brief note regarding comments made by the previous reviewer: When Blackwell Business Publishers published Spiral Dynamics, they did not include an index developed by Don Beck and Chris Cowan (mistakes like this do happen sometimes with academic publishers). Interested readers can contact the authors directly at ... for further details and updated research. Any initial "X-Files" feeling is dispelled once you become more familiar with the model, and the milieu that it evolved from. Spiral Dynamics draws extensively upon over 40 years of research by Beck, Cowan, and their mentor Clare W. Graves. The original research data includes over 500,000 interviews conducted over five continents, and is comparable to other "biopsychosocial systems development" research conducted by Jane Loevinger, Stanley Milgram, Laurence Kohlberg, Erik Erikson etc. What makes Graves unique however is that he created a dynamic model of human consciousness evolution which can assimilate other models and worldviews. He also recognised that insights from Cognitive Psychology, Genetics, and Neurophysiology would need to be examined. Fans of NeuroLinguistic Programming, General Systems Theory, Memetics and the Human Potential Movement will find a wealth of material, plus reading resources for further specialised research. SD has been applied to resolve racial tension in South Africa, in education systems and government, by the World Future Society State of the World Forum, Arlington Institute, and Integral Institute, and by major companies such as Nedbank and SouthWest Airlines. Anyone questioning its credentials simply haven't done their research. Its scope and depth surpasses what masquerades as "snake-oil" solutions: SD asks "why" such solutions are posed; what the prevailing "life conditions" are in an individual's life, company's growth, or country's situation (the interaction of historical times, geographic place, human existential problems, and social circumstances); and in examining change, questions "from what . . . to what?"