此篇論文最主要探討在Second Life的虛擬世界裡使用英文對話代理人，有哪些因素可以改善母語非英文的學生在學習英文時的學習成效，論文中引用一個虛擬環境對學習成效影響的模型([1] Lee et al. 2010)，從各種不同的構面和其變數來檢驗自動對話代理人對學習成效的影響，根據實驗的結果顯示，在使用代理人的Second Life 3D虛擬學習環境下，模型中的SL feature對Presence和Control & Active有正面的影響，而Usability對Motivation, Cognitive Benefits和Control & Active有正面的影響，而在模型中的四個構面Presence, Motivation, Cognitive Benefits, Control & Active也都會正面影響學習成效，因此透過這篇論文，可以了解在Second Life中使用代理人對學習成效上有正面的幫助。 This thesis aimed to discuss whether the automatic dialogue agents in Second Life will improve students English learning outcomes. This study adopted Lee et al.’s model (2010), which discusses the influences of virtual environments on learning effectiveness, to investigate the influence of automatic dialogue agents on English learning from a variety of dimensions and variables. The experimental results showed that, under the 3D virtual environment, SL feature had significant effect on Presence and Control & Active. Besides, Usability had significant effect on Motivation, Cognitive Benefits and Control & Active. Moreover, Presence, Motivation, Cognitive Benefits and Control & Active positively influenced learning effectiveness. Therefore, this study revealed that the use of automatic dialogue agent in Second Life had a positive effect on English learning.
