| Summary: | 碩士 === 國立東華大學 === 企業管理學系 === 98 === The Internet has gained great popularity and provides everyone a convenient way to access the abundant information. Using portal site has become one of the most common tasks that users are performing on the Internet.
Although there are some studies which focus on portal site in academic researches, only few researches discuss the intention of using portal site from the perspective of social cognitive theory. Social cognitive theory offers an important perspective about how people response to environment. That is suitable for explaining the behavior of users who use portal site on the internet.
This research is based on social cognitive theory, technology acceptance model, updated DeLone and McLean information systems success model, expectation confirmation theory and self efficacy theory to construct the model. The purpose of this research is to explore the antecedents of actual usage of websites.
836 effective questionnaires in this research were collected and analyzed by using structure equation modeling. The results are as follows: (1) Hypotheses except from H6: user’s self efficacy will significantly influence portal site‘s perceived usefulness and H9: portal site‘s information quality will significantly influence portal site‘s perceived ease of use, the rest of hypotheses were all supported. (2)The whole, this research theory can be supported, each construct really have relation of influencing each other. (3)The relationships between self efficacy and perceived usefulness are apparently mediated by perceived ease of use.
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