Usefulness and Self-Expressiveness: Extending TAM to Explain the Adoption of a Mobile Parking Service

Abstract

Research on the adoption of mobile services in everyday life contexts have shown how important entertainment and self-expressiveness are to the users' adoption of these services.However, as illustrated by the variables of the much applied TAM model, utilitarian motivations are still focused in ICT-adoption research.Mobile parking services may be used as a "crucial test" of the importance of utilitarian versus nonutilitarian motivations in the adoption of mobile services.In a field study, 459 trial users of mobile parking services were studied using a TAM model extended with the motivational influence of self-expressiveness.The results show that even if mobile parking services have been designed to meet the functional needs of the parking car driver, both the derived motivations of self-expressiveness and the extrinsic motivations of usefulness are important in explaining trial users' adoption of these services.