Explaining Employees Extended Use of Complex Information Systems


Investments in complex information systems by organizations reached a record high of US$ 26.7 billion in 2004. Yet, organizations seldom use these systems to the fullest extent and attain the expected return on investment. This paper addresses the issue of system underutilization by investigating Extended Use, which refers to using more system features to support one’s tasks. Extended Use was examined in the nomological networks of the IS Continuance (ISC) model and Technology Acceptance Model (TAM). A field survey was conducted in a large manufacturing firm that had successfully implemented a popular ERP solution for more than two years. All paths in both ISC and TAM were statistically significant. A synthesized model was later proposed and examined in a post-hoc analysis. The results indicate that the synthesized model, as compared to ISC and TAM, explained slightly higher variances in Extended Use, Perceived Usefulness, and Satisfaction. Specifically, Perceived Ease of Use (PEOU) and Perceived Usefulness (PU) both affected Extended Use. Interestingly, Satisfaction has no direct impact on Extended Use in the presence of PU and PEOU. In contrast to most technology acceptance research, PEOU has a stronger behavioral impact than PU. This research provides a framework that explains Extended Use and is one of the few studies that investigates IS use behavior that exceeds simple, shallow, and routine use.

Extracted Key Phrases

12 Figures and Tables

Citations per Year

191 Citations

Semantic Scholar estimates that this publication has 191 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@inproceedings{Hsieh2016ExplainingEE, title={Explaining Employees Extended Use of Complex Information Systems}, author={J. J. Po-An Hsieh and Wei Wang}, year={2016} }