信息呈现方式对学习效果的影响:虚拟教师拟真度的调节作用

The Impacts of Information Presentation Modes on Learning Effects:The Moderating Role of Virtual Teachers’Simulation Fidelity

[目的/意义]人工智能的发展为传统教育教学带来了新的发展契机,引入了虚拟教师这一全新的人工智能教育主体,并由此产生了更为新颖的人智交互教学形态。探索人智教学交互中教学信息呈现方式与虚拟教师拟真度的作用,将有助于提升学习者在全新沉浸式环境中的学习效果,为未来以虚拟教师为主体的理想课堂建设提供方向。[研究设计/方法]聚焦于人智教学交互情景,招募54名参与者进行了一项3(信息呈现方式:文字/图片/视频)×2(拟真度:超写实/卡通)的被试间受控实验,参与者被随机分配到6个组中并观看相应的教学视频,通过前后测问卷对参与者的学习体验效果进行测量。[结论/发现]在虚拟教师授课的人智交互中,信息呈现方式对学习效果具有显著影响,视频带来的学习效果要显著优于文字和图片;上述影响只有当虚拟教师的拟真度较高时才存在,对卡通版虚拟教师而言,不同信息呈现方式带来的学习效果并无显著差异。[创新/价值]聚焦于虚拟教师这一新颖的人工智能教学代理,通过受控实验精准度量用户学习体验,突破了经验设计的局限,为虚拟教师视觉特征及其教学信息呈现的优化提供了科学依据,丰富了以虚拟教师为主体的教学课程的基本设计原则。

[Purpose/Significance]With the development of artificial intelligence,virtual teacher has emerged as new artificial intelligence pedagogical agents,and a new forms of education has also appeared.This study aims to explore the role of knowledge presentation modes and virtual teachers'simulation fidelity in Human-AI pedagogical interaction so as to provide new possibilities for improving learning effect in the immersive environment and provide guidance for curriculum construction.[Design/Methodology]Under the scenario of Human-AI pedagogical interaction,54 participants were recruited to complete a within-subjects design experiment of 3(knowledge presentation mode:text/picture/video)×2(degree of realism:hyper-realism/cartoon).Participants were randomly assigned to one of six groups and watched the corresponding instructional videos.The learning effects of participants were measured through pre-and post-test questionnaires.[Findings/Conclusion]In Human-AI pedagogical interaction with virtual teachers,the mode of knowledge presentation has a significant impact on the learning effect and the learning effect of video is obviously better than that of text and pictures.These effects are only observed in virtual teachers with high-fidelity simulation,while there are no significant difference in the learning effects of different knowledge presentation modes in the low-fidelity simulation condition.[Originality/Value]Focusing on virtual teacher,a new artificial intelligence pedagogical agent,this study accurately measures the user learning experience through controlled experiments,which breaks through the limitations of experiential design and provides a scientific basis for the optimization of the virtual teacher visual features and its knowledge presentation modes,and enriches the basic design principles of teaching courses centered on virtual teachers.