Existing researches on IT system success have focused mainly on user satisfaction (e.g., Baily and Pearson, 1983; DeLone and McLean, 1992; DeLone and McLean, 2004) and technology acceptance (Davis, 1989; Venkatesh et al., 2003). User satisfaction was ...
Existing researches on IT system success have focused mainly on user satisfaction (e.g., Baily and Pearson, 1983; DeLone and McLean, 1992; DeLone and McLean, 2004) and technology acceptance (Davis, 1989; Venkatesh et al., 2003). User satisfaction was measured and explained in terms of information quality, system quality and so on as substitution variables such as performance and effectiveness that are not easily measurable (DeLone and McLean, 1992; Gatian, 1994). Meanwhile, in terms of technology acceptance, based on the belief in the targets, the easiness of use and the perceived usefulness, target behaviors were forecast and explained. However, researches from the viewpoint of user satisfaction are limited in forecasting the behaviors using the targets (Davis, 1993; DeLone and McLean, 1992), and since the concept of user satisfaction, fundamentally, is not the objective performance or quality of the system, but satisfaction perceived by the evaluator or the user, various possible influences on the user's perception process resulted in overlooking the difference in actual performance and effectiveness levels (Gatian, 1994; Suh and Lee, 1994). Also, the viewpoint of technology acceptance has the limitations of providing limited guidelines on specific elements influencing the use of IT systems like failing to properly explain the "acceptance-discontinuance anomaly” phenomenon (Venkatesh et al., 2003). These viewpoints need to consider both user satisfaction and technology acceptance which are deemed important. However, Internet shopping malls are a Web-based IT output, and a business place with consumers from the aspect of providing services, giving them a more than IT attribute (Gefen et al., 2002). And, since IT systems such as Internet shopping malls should create profits through continued purchase activities by consumers, it is imperative to research into consumers' intention to continue to use after their initial acceptance. Likewise, user satisfaction over Internet shopping malls and intention to continue to use them should be interpreted and accepted by users from the feature-centric view of technology (Jasperson et al., 2005). Thus, this study applied the expectation-disconfirmation theory which uses the confirmation concept intended for evaluating expectation and performance on the basis of experience. Under this theory, in the marketing field, the consumer satisfaction concept, the usefulness of the viewpoint of technology acceptance, and continued use are integrated, thereby offering a new model, and taking the course-oriented approach of understanding consumer cognitive course. In particular, with regard to purchases via Internet shopping malls, major new variables such as information satisfaction and usefulness of decision making were studied in an effort to examine the overall reaction to the evaluation of the consumer-perceived information. In an analysis of purchasers, unlike the many existing researches on the expectation-disconfirmation theory, the relation between satisfaction and expectation-disconfirmation variables was found to be not significant, while in this context, information satisfaction and the usefulness of information satisfaction were found to be related to each other. Also, information satisfaction and usefulness of decision making are an ex post concept being influenced by confirmation, and they were found to influence overall satisfaction, and the intention to continue to use was found to be formed through consumer satisfaction. Likewise, the deterministic variable in forming consumer satisfaction over Internet shopping malls is information satisfaction, and the deterministic variable for the intention of continue to use necessitates overall consumer satisfaction. And, for the satisfaction forming path, confirmation mediates in information satisfaction and usefulness of decision making thereby indirectly influencing overall satisfaction. These results point out information's influence on and importance in satisfaction over and continued use of Internet shopping malls. They also offer anew scientific viewpoint through the integration of IT systems and marketing viewpoints, and a modeling verification with addition of new variables, as well as implications for management and utilization measures for information sources.