The Actual Usage of ERP Systems: An Extended Technology Acceptance Perspective

263 Implementing the ERP system is one method of minimizing cost and maximizing profit to increase competitive advantage. However, numerous factors influence ERP implementation success, including user resistance. This study thus attempts to explain behavioural intention and actual usage of ERP implementation based on the technology acceptance model (TAM). The model also incorporates additional behavioural constructs, top management support, computer self-efficacy (CSE) and computer anxiety. The Lisrel package of structural equation modelling is used in this study to verify the causal relationships between variables. Analytical results demonstrate that top management support strongly and positively affects CSE, perceived usefulness and perceived ease of use. However, CSE had an insignificant affect on perceived usefulness, but was found to directly influence perceived ease of use. Meanwhile, perceived usefulness influenced behavioural intention, but does not significantly affect actual usage. Perceived ease of use was found to directly affect behavioural intention. Finally, behavioural intention positively and directly affects actual usage. The implications of these findings for researchers and practitioners are discussed.