| ACKNOWLEDGEMENTS | 第9-10页 |
| ABSTRACT | 第10页 |
| 摘要 | 第11-18页 |
| CHAPTER I INTRODUCTION | 第18-23页 |
| 1.1 Research Background | 第18-20页 |
| 1.2 Research Purpose | 第20-21页 |
| 1.3 Research Significance | 第21-22页 |
| 1.4 Organization of the Thesis | 第22-23页 |
| CHAPTER II THEORETICAL BASIS | 第23-41页 |
| 2.1 Involvement Load Hypothesis | 第23-25页 |
| 2.2 Related Theories Concerning Involvement Load Hypothesis | 第25-34页 |
| 2.2.1 Incidental Vocabulary Acquisition | 第25-30页 |
| 2.2.2 Input Hypothesis | 第30-31页 |
| 2.2.3 Noticing Hypothesis | 第31-32页 |
| 2.2.4 Depth of Processing Hypothesis | 第32-34页 |
| 2.3 Empirical Studies of Involvement Load Hypothesis | 第34-39页 |
| 2.3.1 Indirect Evidence for Involvement Load Hypothesis | 第34-37页 |
| 2.3.2 Direct Tests of Involvement Load Hypothesis | 第37-39页 |
| 2.4 Critiques of the Previous Studies | 第39-40页 |
| 2.5 Research Questions of the Present Study | 第40-41页 |
| CHAPTER III METHODOLOGY | 第41-52页 |
| 3.1 Participants | 第41-42页 |
| 3.2 Research Design | 第42-46页 |
| 3.2.1 Reading Materials and Target words | 第42-43页 |
| 3.2.2 Task Design and Time Spent on Each Task | 第43-46页 |
| 3.3 Instruments | 第46-47页 |
| 3.4 Procedures | 第47-49页 |
| 3.4.1 Treatment of the Experiment | 第47-48页 |
| 3.4.2 Immediate Posttest | 第48-49页 |
| 3.4.3 Delayed Posttest | 第49页 |
| 3.5 Data Collection | 第49-52页 |
| 3.5.1 Scoring of Posttests | 第50-52页 |
| CHAPTER IV RESULTS AND DISCUSSION | 第52-66页 |
| 4.1 The Result of Different Tasks on Word Knowledge | 第52-58页 |
| 4.1.1 The Result of Passive Word Recall in Immediate and Delayed Posttests | 第52-54页 |
| 4.1.2 The Result of Active Word Recall in Immediate and Delayed Posttests | 第54-58页 |
| 4.2 The Result of Time Spent on Each Task | 第58-63页 |
| 4.2.1 The Result of Words Learned per Minute for Passive Word Recall in Posttests | 第58-60页 |
| 4.2.2 The Result of Words Learned per Minute for Active Word Recall in Posttests | 第60-63页 |
| 4.3 Discussions | 第63-66页 |
| 4.3.1 Discussion of the Result of Passive Word Recall in Immediate and Delayed Posttests | 第63-64页 |
| 4.3.2 Discussion of the Result of Active Word Recall in Immediate and Delayed Posttests | 第64-65页 |
| 4.3.3 Discussion of Time Spent on Each Task | 第65-66页 |
| CHAPTER V CONCLUSION | 第66-70页 |
| 5.1 Major Findings | 第66页 |
| 5.2 Pedagogical Implications | 第66-68页 |
| 5.3 Limitations and Suggestions for Future Research | 第68-70页 |
| REFERENCES | 第70-76页 |
| APPENDICES | 第76-86页 |
