隨著逐年增加的線上教育潮流，教學影片的呈現也越來越多元。在以演講影片及動畫影片為要線上教學影片的情況下，本研究針對這兩種教學呈現方式，探討閱聽者對其視覺複雜度及特殊性之感受，以及其記憶和態度意願。本研究發現，視覺複雜度負向影響了閱聽人之喚起及認知沉浸，反之，視覺特殊性皆具正向影響。喚起程度正向影響記憶效果，而認知沉浸則不顯著影響記憶。

With the increasingly growth of online education multimedia and open course ware from universities or non-profit organization, there are huge amount of learning materials in video format free for learners all around the world . Among those videos, simple video recorded lectures and animations are the format commonly seem. In the extant multimedia literatures, the effect of novelty and complexity of processed media are not well distinguished. In our study, a research model is developed to explain the effects among visual complexity and visual novelty features of an educational lecture video or an animation. An online experiment was conducted to test the model. The results suggested that a multimedia learner’s arousal and cognitive engagement can be evoked by visual novelty but decreased by visual complexity. Both arousal and cognitive engagement have carry-over effects on subsequent approach behavioral attitude toward the online educational clips. However, the salience of recall performance is dependent on initial aroused level, instead of depth of engaging cognitively.

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