Abstract
This thesis examines the role of service appropriation and client participation in the value co-creation mechanism in services. First, an exploratory study in the health sector aimed to propose a comprehensive framework for service appropriation and analysed the process of value co-creation from a "customer centric" perspective. Second, a quantitative study was conducted with 508 diabetics patients. The results highlight the impact of service appropriation on value formation and on client participation. This research may contribute to the theory of value co-creation by proposing a modelization of its mechanisms. Plus, it gives clues to deepen the understanding of the concept of appropriation in marketing. Finally, this study provides important insights into how service providers and managers should manage the appropriation of their services and engage customers in the value co-creation process.