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Adoption of E-Government Services: The Case of Electronic Approval System


  • Sinawong Sang

    (Seoul National University, Republic of Korea)

  • Jeong-Dong Lee

    (Seoul National University, Republic of Korea)

  • Jongsu Lee

    (Seoul National University, Republic of Korea)


The purpose of this study is to assess and test the factors that influence user adoption of e-Government services: the Electronic Approval System (EAS). This study uses the Technology Acceptance Model (TAM), the extended TAM (TAM2), the Diffusion of Innovation (DOI), and trust to build a parsimonious yet comprehensive model of factors that influence user acceptance of the EAS. We collected data from a total of 112 public officers in 12 ministries in Cambodia. We assessed the model with regression analyses. The findings in this article show that the determinants of the model (perceived usefulness, relative advantage, and trust) explain 30.5% of the variance in user acceptance of the EAS. At the same time, image, output quality, and perceived ease of use explain 38.4% of the variance in user perception of the usefulness of the EAS. In this article, we discuss our findings, implications, and suggestions for future research.

Suggested Citation

  • Sinawong Sang & Jeong-Dong Lee & Jongsu Lee, 2009. "Adoption of E-Government Services: The Case of Electronic Approval System," International Journal of E-Adoption (IJEA), IGI Global, vol. 1(2), pages 1-22, April.
  • Handle: RePEc:igg:jea000:v:1:y:2009:i:2:p:1-22

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