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摘要
Employees' extended use of enterprise systems becomes an important concern for firms striving to reap benefits from IT investment. This paper proposes a person-environment-technology (PET) research model to explain how system self-efficacy, leader-member exchange, and system modularity, jointly impact employees' extended use. The model is tested with a survey on enterprise system users in six firms which have already implemented enterprise resource planning (ERP) systems, and several meaningful findings are yielded. First, except for leader-member exchange, both system self-efficacy and modularity are found to positively and directly affect extended use. Second, leader-member exchange, rather than exerting a direct effect, can positively moderate the effects of system self-efficacy and modularity on extended use. Third, system modularity can strengthen the relationship between system self-efficacy and employees' extended use. The limitations and implications for research and practice are discussed.
