Massive open online course (MOOC) learning attracts more and more attention in both the practice and the research field. Finding out what factors influence learners' MOOC adoption is of great importance. This study focuses on learner control, user characteristics and platform difference. Hypotheses and a research model are proposed by incorporating perceived learner control, e-learning self-efficacy, and personal innovativeness in information technology (PIIT) into the original technology acceptance model (TAM). With the empirical data from 214 MOOC learners, the effects of perceived learner control on perceived usefulness and perceived ease of use are confirmed. E-Learning self-efficacy is found to have positive influence on perceived learner control and ease of use. While the effect of PIIT on perceived learner control is not supported, PIIT influences learners' perception of usefulness and ease of use. Furthermore, a comparison between foreign and native MOOC platforms shows the former should emphasize ease of use more, and the latter should emphasize usefulness more, to enhance their attractiveness.
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