Measuring of information system(IS) effectiveness has been considered important both for academics and practitioners. IS effectiveness is an ultimate dependent variable in academic research, while it is used as an important criterion for investment de...
Measuring of information system(IS) effectiveness has been considered important both for academics and practitioners. IS effectiveness is an ultimate dependent variable in academic research, while it is used as an important criterion for investment decision making in the real world. User information satisfaction (UIS) has been widely used as a surrogate measure for IS effectiveness. However, prior research incorporating UIS as a dependent variable has found mixed results, because UIS is defined in many different ways depending upon the researchers. This research attempts to develop a conceptual model of UIS by sorting out different constructs--that is, user attitudes, information quality, IS usage, and organizational effectiveness--intermixed in existing UIS measures. A field study was conducted to test the research hypotheses, using middle level managers in Korea Telecommunications (KT) as a sample. Sample subjects were end-users of billing and accounting information systems in KT. Research results have found that information quality influences organizational effectiveness as well as IS usage in a positive way. However, contrary to our expectations, user attitudes and IS usage are not significantly related to organizational effectiveness. The research findings suggest that organizations put much emphasis on enhancing the quality of IS information than merely increasing IS usage. Future research implications and limitations of this research are also discussed.