Increasing the realism of on-screen embodied instructors creates more looking but less learning

Area of Science:

• Educational Technology
• Cognitive Psychology
• Human-Computer Interaction

Background:

• Embodied instructors in online learning can enhance multimedia learning, but their effectiveness is debated.
• The impact of instructor realism on learning outcomes remains unclear.

Purpose of the Study:

• To investigate how embodied on-screen instructors with varying realism levels influence the learning process and outcomes in multimedia lessons.
• To determine the optimal level of realism for embodied instructors in online learning environments.

Main Methods:

• 125 college students participated in the study.
• Participants learned about neural transmission via online multimedia lessons featuring a real human, cartoon human, cartoon animal, or no instructor.
• Eye-tracking was used to measure fixation patterns on screen elements.

Main Results:

• Cartoon instructors (human or animal) led to increased focus on relevant content and better retention and transfer test scores compared to no instructor.
• A real human instructor resulted in more time fixated on the instructor, less on relevant content, and lower retention scores than cartoon human instructors.
• Fixation time on the instructor mediated the relationship between instructor realism and retention, highlighting a key mechanism.

Conclusions:

• Embodied instructors can benefit multimedia learning, with cartoon or animal avatars proving more effective than real humans.
• Lower realism in on-screen embodied instructors can lead to improved learning processes and outcomes.
• The findings suggest a specific boundary condition where reduced realism enhances multimedia learning effectiveness.