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Ingénierie de l'Interaction Homme-Machine et Persuasion Technologique : étude du concept de Chemin Persuasif

Abstract : Societal challenges are an international concern. Daily advertising campaigns rise attention of people to make them change: "Smoking kills", "Drinking or driving, choose", "Eating five fruits and vegetables a day", etc. However, these campaigns have limited effect.Persuasive technologies have been explored for fifteen years to orient technology on the difficulty of changing behavior. Monitoring devices such as bracelets or watches of physical activities and applications are multiplying obtaining commercial successes. However, despite the potential capabilities of technology of delivering personalized strategies, the incentive to change remains limited. The difficulty lies in the multidisciplinarity of the field: designing persuasive interactive systems requires mastering the fundamental concepts and the advances in cognitive and social psychology, which makes the persuasive practice extremely ambitious.This thesis contributes to the engineering of persuasive interactive systems. It deals with the process of behavior change and proposes the concept of persuasive path to stimulate users in their behavior change. The persuasive path is a succession of events designed to pave the progression of the user toward the change among the set of possible behaviors. This set is modeled with state machines describing all the possible transitions between behaviors. Transitions between behaviors are triggered when the determinants of the corresponding behaviors are satisfied in the current user's context. A persuasive architecture is proposed to orchestrate the state machines and the persuasive paths. The formalism of state machines also allows the characterization and comparison of change processes in the literature.An incremental design method is proposed to design, step by step, the state machine and the persuasive path. The steps proceed in order to actuate design choices that make the system little by little more dependent: problem dependent, domain dependent, task dependent and context dependent. This structuring progressive conception allows a revision of the design choices according to the observed performance of the persuasion.The conceptual contributions (concepts and design method): CRegrette, an application aimed at stopping behavior (smoking); on the other hand, Mhikes, an application aimed at reinforcing behavior (walking). A complete implementation of Mhikes (concepts and architecture) is made available to show the technical feasibility of the approach. The technological maturity of this approach allow the deployment of the application at real scale and an experimental evaluation of the contributions.The evaluation results confirms the relevance of the models and of the architecture, allowing the introduction of software probes (1) to identify the roles endorsed by users, 2) to follow the possible changes and 3) to produce personalized notifications. The notifications resulted more efficient than the communication campaigns operated by Mhikes. However, the role changes remains complex, with extra-transitions that are more difficult to actuate than intra-transitions.In conclusion, the thesis delivers a complete set of methods, models and tools for the engineering of persuasive interactive systems. More broadly, this set can be used by other communities to progress in the compression of human interaction.
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Alessandro Fenicio. Ingénierie de l'Interaction Homme-Machine et Persuasion Technologique : étude du concept de Chemin Persuasif. Interface homme-machine [cs.HC]. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAM035⟩. ⟨tel-02445927⟩

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