| Abstract in Chinese | 第1-9页 |
| Abstract in English | 第9-11页 |
| List of Tables | 第11-12页 |
| Chapter 1 Introduction | 第12-16页 |
| ·Research Orientation of the Present Study | 第12页 |
| ·The Rationale | 第12-13页 |
| ·Key Research Questions | 第13-14页 |
| ·Approach for the Present Study | 第14页 |
| ·Contents of the Remaining Chapters | 第14-16页 |
| Chapter 2 Literature Review | 第16-34页 |
| ·Theories on Vocabulary Learning | 第16-28页 |
| ·Modes of Vocabulary Learning | 第16-20页 |
| ·Depth of Processing Theory | 第20-23页 |
| ·The Involvement Load Hypothesis | 第23-28页 |
| ·Empirical Research on L2 Incidental Vocabulary Acquisition | 第28-32页 |
| ·Empirical Studies Based on Depth of Processing Theory | 第29-31页 |
| ·Some Empirical Evidence for the Involvement Load Hypothesis | 第31-32页 |
| ·Summary and Conclusions | 第32-34页 |
| Chapter 3 A Conceptual Framework | 第34-39页 |
| ·Theoretical Foundations of the Present Research | 第34-35页 |
| ·Defining the Involvement Load of Three Reading Tasks in This Study | 第35-36页 |
| ·Variables in the Current Research | 第36-37页 |
| ·Specific Research Questions | 第37-38页 |
| ·Summary | 第38-39页 |
| Chapter 4 Research Design and Methodology | 第39-49页 |
| ·Research Design | 第39-46页 |
| ·The Subjects | 第39-41页 |
| ·Reading Passages and Target Words | 第41-43页 |
| ·Three Reading Tasks | 第43-44页 |
| ·Procedures of Investigation | 第44-46页 |
| ·Data Collection | 第46-47页 |
| ·Time Frame for Data Collection | 第46页 |
| ·Scoring Vocabulary Test Paper | 第46-47页 |
| ·Validity and Reliability | 第47-48页 |
| ·Data Analysis | 第48-49页 |
| Chapter 5 Results of the Present Study | 第49-70页 |
| ·Quantitative Results of Experiment 1 | 第49-58页 |
| ·Description of Vocabulary Retention of Three Reading Tasks Over Time | 第49-51页 |
| ·Main Effects and Interaction Effects of Task and Time | 第51-52页 |
| ·Comparison of Vocabulary Retention Under Three Reading Tasks | 第52-53页 |
| ·Comparison of Vocabulary Retention Over Time | 第53-54页 |
| ·Post hoc Test of Vocabulary Retention Across Tasks | 第54-55页 |
| ·Retention of Six Target Words Under Different Tasks Over Time | 第55-58页 |
| ·Quantitative Results of Experiment 2 | 第58-68页 |
| ·Vocabulary Retention Under Reading Tasks Over Time | 第58-59页 |
| ·Main Effects and Interaction Effects of Task and Time | 第59-60页 |
| ·Comparison of Vocabulary Retention Under Three Reading Tasks | 第60页 |
| ·Comparison of Vocabulary Retention Over Time | 第60-61页 |
| ·Post hoc Test of Vocabulary Retention Across Tasks | 第61-62页 |
| ·Retention of Ten Target Words Under Different Tasks Over Time in Experiment 2 | 第62-68页 |
| ·Summary of Quantitative Results of Experiments 1 and 2 | 第68-70页 |
| Chapter 6 Interpretation of Research Results | 第70-77页 |
| ·Discussion of Results | 第70-72页 |
| ·The Effects of Reading Tasks on Vocabulary Retention | 第70-72页 |
| ·The Effects of Testing Time on Vocabulary Retention | 第72页 |
| ·The Effects of Other Factors on Vocabulary Retention in Incidental Vocabulary Acquisition | 第72-77页 |
| Conclusions, Implications and Suggestions | 第77-80页 |
| Conclusions | 第77-78页 |
| Pedagogical Implications | 第78-79页 |
| Limitations of the Present Study and Suggestions for Future Research | 第79-80页 |
| References | 第80-86页 |
| Acknowledgements | 第86-87页 |
| Appendix A (攻读学位期间所发表的学术论文目录) | 第87-88页 |
| Appendix B The Three Reading Tasks in Experiment 1 | 第88-98页 |
| Appendix C The Three Reading Tasks in Experiment 2 | 第98-108页 |
| Appendix D Vocabulary Tests in Experiment 1 | 第108-111页 |
| Appendix E Vocabulary Tests in Experiment 2 | 第111-114页 |
| Appendix F 中文摘要 | 第114-117页 |
