Personalization Principle 1: Use Conversational Rather Than Formal Style
Psychological Reasons for the Personalization Principle
Evidence for Using Conversational Style
Promote Personalization Through Voice Quality
Promote Personalization Through Polite Speech
Personalization Principle 2: Use Effective On-Screen Coaches to Promote Learning
What Are Pedagogical Agents?
Do Agents Improve Student Learning?
Do Agents Need to Look Real?
Do Agents Need to Sound Real?
Personalization Principle 3: Make the Author Visible to Promote Learning
What Is a Visible Author?
Psychological Reasons for Using a Visible Author
Evidence for the Visible Author ...