L’influence de l’appropriation des objets connectés vocaux : manifestation de la dépendance technologique perçue et conséquences sur l’intention comportementale

One of the consequences of the development of the Internet of Things is that we leave more and more digital traces. However, some connected objects have also demonstrated their harmful effects on consumer behavior in terms of technological dependency risk. The aim of this thesis is to show that this risk is not inherent to the portability of objects and their handling, but also concerns “sedentary” connected objects that function solely through voice interaction : Intelligent Voice Assistants via connected home speakers (IVAs). In a qualitative phase (user interviews), the study shows that there are weak signals of perceived dependence, and that the gadget argument is contradicted by the benefits of personal efficiency and the desire to repurchase. It also reveals more anxious revelations among seasoned users than among more amateur users. Then, in a quantitative phase (N=306), the survey confirms that the appropriation of an AVI is a source of perceived technological dependence, and that this affects users' behavioral intentions. This work supports theoretical knowledge on the factors of technological appropriation most conducive to perceived technological dependence. It enriches the literature on the behavioral consequences of technological dependence, but above all, it uncovers the moderators that influence human-machine interactions. Thus, proving that the phenomenon of perceived technological dependence does not escape voice technologies. The thesis invites developers and marketers to favor a chosen intention of continued use that is a source of trust, rather than an anthropomorphism focused on the anguish of no longer having access to AVI assistance or wishing to detach oneself from it. The role of affects in human-machine interactions for purely commercial purposes then opens up ethical and deontological debates.