Extending the Two-Stage Information Systems Continuance Model: Incorporating UTAUT Predictors and the Role of Context
Information Systems Journal, Vol. 21, No. 6, pp. 527–555, 2011
29 Pages Posted: 26 Dec 2011
Date Written: December 25, 2011
This study presents two extensions to the two-stage expectation conﬁrmation theory of information systems (IS) continuance. First, we expand the belief set from perceived usefulness in the original IS continuance model to include three additional predictors identiﬁed in the uniﬁed theory of acceptance and use of technology, namely effort expectancy, social inﬂuence and facilitating conditions. Second, we ground the IS continuance model in the context of transactional systems that involve transmission of personal and sensitive information and include trust as a key contextual belief in the model. To test the expanded IS continuance model, we conducted a longitudinal ﬁeld study of 3159 Hong Kong citizens across two electronic government (e-government) technologies that enable citizens’ access to government services. In general, the results support the expanded model that provides a rich understanding of the changes in the preusage beliefs and attitudes through the emergent constructs of disconﬁrmation and satisfaction, ultimately inﬂuencing IS continuance intention. Finally, we discuss the theoretical and practical implications of the expanded model.
Keywords: expectation-conﬁrmation theory, two-stage model of IS continuance, uniﬁed theory of acceptance and use of technology (UTAUT), e-government, technology adoption, technology acceptance model
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