Development of a measure to assess the quality of user-developed applications

Abstract

For several years now, software quality has been a major concern for those involved in the area of software engineering, and researchers as well as practitioners of the domain have proposed instruments to measure it. Application quality is also a concern for researchers and managers involved in the area of end-user computing. However, since end-user computing research is in a much earlier stage than research in software engineering, relatively few efforts have been made to assess the quality of user-developed applications. Building on earlier work in software engineering and in end-user computing, this study developed and assessed a measure of user-developed applications quality. The quality construct comprises eight dimensions: reliability, effectiveness, portability, economy, user-friendliness, understandability, verifiability, and maintainability. In turn, each quality dimension is composed of a set of criteria. Finally, each criterion is measured by a series of items. The instrument was tested by means of a survey involving 110 end-users. Confirmatory factor analysis, using the partial least squares technique, was conducted. The results indicate that the 56-items instrument is reliable and valid, and that it may be a useful tool for researchers and for practitioners alike.