Chapter 1 Introduction 1.1 The Importance of Interaction 1.2 Statement of the Problem 1.3 Purpose of the Study 1.4 Background 1.4.1 Socio-cognitive perspective 1.4.2 Socio-cognitive approaches to computer-assisted language learning （CALL） 1.4.3 Web-based language teaching （WBLT） 1.5 Web-based courses 1.6 Research variables 1.7 Significance of the study 1.8 Assumptions 1.9 Organization of the dissertation Chapter 2 Formulation of Interaction in Web-based Courses and Literature Review 2.1 Interaction in Web-based courses 2.1.1 Definition of interaction 2.1.2 Types of interaction 2.1.3 Equivalency of interaction 2.1.4 Multidimensional features of interaction 2.1.5 Communication modes 2.2 Key elements for interaction in Web-based courses 2.2.1 Characteristics of interaction 2.2.2 Instructional factors affecting interaction 2.2.3 The benefits of interactive learning 2.3 Student characteristics 2.3.1 Computer skills 2.3.2 Gender 2.3.3 Reasons for taking the course 2.3.4 Average time spent on the course per week 2.4 A review of the effect of interaction on student outcomes 2.4.1 Student satisfaction 2.4.2 Perceived learning 2.4.3 Motivation Chapter 3 Theoretical Framework 3.1 Introduction 3.2 Learner-centered principles（LCPs） 3.3 Social constructivisn on education 3.3.1 Situated learning 3.3.2 Collaborative learning 3.3.3 Situated and collaborative learning in online education 3.4 Summary Chapter 4 Interaction in a Web-based English course:New Horizon College English （NHCE） 4.1 Description of A Web-based English course:New Horizon College English（NHCH） 4.1.1 Course design 4.1.2 Roles and responsibilities 4.1.3 Online learning environment 4.2 Interaction tools used in the Web-based NHCE course 4.2.1 The discussion forum 4.2.2 Email 4.2.3 Course learning documents 4.3 Measures taken and activities done to achieve interaction in the Web-based NHCE course 4.3.1 Schedule by week 4.3.2 Online activities Chapter 5 Research Methodology 5.1 Research design 5.2 Designing procedures …… Chapter 6 Results Chapter 7 Discussion Chapter 8 Conclusion Appendices References
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