ProSPer: modeling the change, driving the persuasion

The development of persuasive interactive systems is typically achieved in an opportunistic way for shipping one persuasive system at a time, thus negatively affecting internal modularity (persuasion concepts are typically mixed up throughout the development life cycle) and reusability (parts or the whole persuasive system is of little reuse for another domain of human activity). In order to address these challenges, this paper introduces, motivates, and defines MOST4P, a Mission-Operation-Strategy-Tactic 4-level model for structuring the development of a persuasive interactive system and ProSPer, a MOST4P-based framework for developing persuasive interactive systems, software-based and/or manual-based that explicitly satisfy modularity (MOST concepts satisfy the separation of concerns) and multiple-domain applicability (MOST concepts could be reused from one domain to another). The paper then reports on a pilot study involving twelve participants evaluating how MOST4P concepts have been used in a self monitoring bracelet and in a mobile ProSPer-based persuasive interactive system. This study suggests that overall subjective satisfaction and usefulness are the most appreciated criteria, followed by interaction and information qualities.