Usefulness and ease of use: field study evidence regarding task considerations

摘要

Usefulness and ease of use (EOU) are both believed to be important factors in determining the acceptance and use of information systems. Yet, confusion exists regarding the relationship between these two constructs and the relative importance of each in relation to use. Usefulness is seen as a function of task/tool fit, while EOU is viewed as a task-independent construct reflecting intrinsic properties of the user interface. This paper presents the results of a field study illustrating the hazards of focusing on EOU and overlooking usefulness. Based on the study, the authors suggest that perceived EOU may be a function of task/tool fit.