ABSTRACT
This chapter provides an overview of health interventions, the main models used to guide them, proposals for planning and implementation, and designs for evaluations. It presents general guidelines but recognize that each intervention unique in the sense that it will need to adapt to specific contexts, target populations, resources, and barriers. This is the main reason why a significant amount of work around the design of interventions focuses on understanding the factors that determine behavior change. Most of the behavioral models discusses so far have emphasizes the role of individuals rather than their environments in the process of behavior change. The Community Participatory Involvement (CPI) model, which describes in greater detail in, is a variation of community-based models. Community-based participatory research (CBPR) proposes as a term that could potentially envelop several of these approaches. The Protection Motivation Theory (PMT) is another example of a motivational model. The transtheoretical model each stage represents a different phase of motivational readiness for change.
