The mediation of external variables in the technology acceptance model

Burton-Jones, Andrew and Hubona, Geoffrey S. (2006) The mediation of external variables in the technology acceptance model. Information and Management, 43 6: 706-717. doi:10.1016/

Author Burton-Jones, Andrew
Hubona, Geoffrey S.
Title The mediation of external variables in the technology acceptance model
Journal name Information and Management   Check publisher's open access policy
ISSN 0378-7206
Publication date 2006-09
Sub-type Article (original research)
DOI 10.1016/
Volume 43
Issue 6
Start page 706
End page 717
Total pages 12
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract TAM specifies a pathway of technology acceptance, from external variables to beliefs, attitudes, and system usage. We tested one of its assumptions that the ‘perceived ease-of-use’ and ‘perceived usefulness’ constructs fully mediate the influence of external variables on usage behaviors. Using a survey of 125 employees of a U.S. Government agency we found, contrary to the normally accepted assumption, that external variables could have direct effects on usage behavior over and above their indirect effects. We also found that TAM is significantly and consistently better at predicting frequency than volume of usage.
Keyword Technology acceptance model
External variables
Individual differences
User acceptance
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: UQ Business School Publications
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Citation counts: TR Web of Science Citation Count  Cited 72 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 130 times in Scopus Article | Citations
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Created: Fri, 29 Jun 2012, 10:03:00 EST by Karen Morgan on behalf of UQ Business School