Barrier Analysis is based on several health behavior models, in particular , the Health Belief Model (HBM). The Health Belief Model (HBM), which was originally created to investigate why some people fail to undertake preventive health measures, remains one of the most widely employed theories of health behavior. The attached 2012 paper by Orji et al discusses some of the behavioral determinants that are part of the Health Belief Model (which are also assessed in Barrier Analysis), and also how adding several determinants to the model (future consequences, self-identity, concern for appearance, perceived importance) led to a 78% increase (from 40% to 71%) in predictive capacity of the extended (compared to the original) Health Belief Model when studying food consumption behavior.
When I developed Barrier Analysis in 1990, I never intended for it to be a closed model that would not be adapted based on emerging scientific discoveries about behavior. I also have encouraged people to add on their own questions to explore hypotheses about why some people do a behavior and others do not. Is it time to consider adding other determinants to those assessed with Barrier Analysis, at least in some contexts? How do we balance the exploration of many possible determinants with the practical use of the tool (e.g., wanting to keep interviews brief)? What is your opinion?