Theories that focus on beliefs and actions of individuals were among the first theories of health behavior to be developed and remain the most widely used today. In this chapter, we comment on four theories introduced in Part Two of this book: Health Belief Model, Theory of Planned Behavior, The Transtheoretical Model, and Precaution Adoption Process Model. We discuss why theory is needed, exam...

Decision making is an integral part of the transtheoretical model of behavior change. Stage of change represents a temporal dimension for behavior change and has been the key dimension for integrating principles and processes of change from across leading theories of psychotherapy and behavior change. The decision-making variables representing the pros and cons of changing have been found to ha...