A general model of the determinants of behavior change. Taken from Committee on Communication for Behavior Change in the 21st Century: Improving the Health of Diverse Populations, Board on Neuroscience and Behavioral Health, Institute of Medicine of the National Academies. Chapter 2: Theory in, Speaking of Health: Assessing Health Communication Strategies for Diverse Populations. The National Academies Press, Washington, D.C. 2002. page 42.