Résumé
Behavior change is a complex process in which people receive
support in order to improve aspects of their behavior, for instance re-
garding their health or lifestyle. Although there exist several theoretical
approaches to model behavior change, including abstractions that can be
applied to different use-cases, these are not easily translated into reusable
components that can be integrated into implementable systems for per-
suasion. This work discusses the need for an ontology-based approach
to modelling interactions in eHealth systems, with the goal of achieving
behavior change. This contribution includes an analysis of current mod-
elling needs in behavior change, specially regarding: stages of change,
motivation & ability factors, plans & actions, argumentation, and do-
main modeling.