Building upon the expectation disconfirmation theory and prior satisfaction studies, this study proposes a research model explaining user information satisfaction in knowledge-based virtual communities. The proposed model was tested using an online survey that was conducted among the users of a non-profit-making Bulletin Board Systems established by a local university in mainland China. The results suggest that user information satisfaction with knowledge-based virtual communities is determined by four attributes of information quality, including accuracy, comprehensiveness, relevance and timeliness, and their disconfirmations.
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