Abstract
Our conceptual models determine how problems are approached and people treated. The Transtheoretical Model of Intentional Behavior Change proposes several important dimensions of the change process that include stages or tasks of change, specific processes of change that interact with the stages, and a context of change that broadens the perspective on change to encompass other problems and resources in the life context. Although this model has been very helpful in generating research and interventions as can be viewed in this special issue, continued testing of the model is needed to confirm the utility of the model for understanding the phenomenon of intentional behavior change. The ongoing challenge for using the model and exploring the process of change is threefold: (1) proper understanding and assessment of the dimensions of the model; (2) sensitive application of these dimensions to appropriate problems and populations; (3) keeping the focus on the process of change and not confusing the dimensions of the model with the reality of the phenomenon studied. Current applications and studies provide important information and offer a blueprint for learning more about the process of behavior change. A careful and thoughtful application and testing of the TTM can continue to contribute to the health and well-being of the population.