| ACKNOWLEDGEMENTS | 第5-6页 |
| ABSTRACT | 第6-8页 |
| 摘要 | 第9-15页 |
| Chapter One INTRODUCTION | 第15-19页 |
| 1.1 Background and Need for the Study | 第15-17页 |
| 1.2 Significance and Objectives of the Study | 第17页 |
| 1.3 Organization of the Thesis | 第17-19页 |
| Chapter Two LITERATURE REVIEW | 第19-34页 |
| 2.1 Theoretical Bases of Vocabulary Acquisition | 第19-23页 |
| 2.1.1 Depth of Processing Theory | 第19-20页 |
| 2.1.2 Involvement Load Hypothesis | 第20-21页 |
| 2.1.3 Noticing Hypothesis | 第21-22页 |
| 2.1.4 Output Hypothesis | 第22-23页 |
| 2.2 Word Concreteness | 第23-27页 |
| 2.2.1 Definition of Concreteness | 第23页 |
| 2.2.2 Concreteness Ratings | 第23-25页 |
| 2.2.3 Concreteness Effect | 第25-27页 |
| 2.2.3.1 Dual-coding Theory | 第25-26页 |
| 2.2.3.2 Context-availability Theory | 第26-27页 |
| 2.3 Incidental Vocabulary Acquisition | 第27-28页 |
| 2.4 Review of Related Studies | 第28-33页 |
| 2.4.1 Studies on Involvement Load Hypothesis and VocabularyAcquisition | 第28-32页 |
| 2.4.2 Studies on Word Concreteness and Vocabulary Acquisition | 第32-33页 |
| 2.5 Summary | 第33-34页 |
| Chapter Three METHODOLOGY | 第34-44页 |
| 3.1 Research Questions | 第34-35页 |
| 3.2 Participants | 第35-36页 |
| 3.3 Reading Material and Target Words | 第36-37页 |
| 3.4 Instrument | 第37-39页 |
| 3.5 Procedure | 第39-42页 |
| 3.5.1 Pilot Study | 第39-40页 |
| 3.5.2 Task Treatment | 第40-41页 |
| 3.5.3 Immediate Posttest | 第41页 |
| 3.5.4 Delayed Posttest | 第41-42页 |
| 3.6 Data Analysis | 第42-44页 |
| Chapter Four RESULTS and DISCUSSION | 第44-58页 |
| 4.1 Effects of Level of Task-induced Involvement and Word Concreteness onInitial Vocabulary Learning | 第44-48页 |
| 4.1.1 Effect of Level of Task-induced Involvement on Initial VocabularyLearning | 第44-46页 |
| 4.1.2 Effect of Word Concreteness on Initial Vocabulary Learning | 第46-48页 |
| 4.2 Effects of Level of Task-induced Involvement and Word Concreteness onRetention of Vocabulary | 第48-52页 |
| 4.2.1 Effect of Level of Task-induced Involvement on Retention ofVocabulary | 第48-50页 |
| 4.2.2 Effect of Word Concreteness on Retention of Vocabulary | 第50-51页 |
| 4.2.3 Effect of Interaction of Level of Task-induced Involvement andWord Concreteness on Retention of Vocabulary | 第51-52页 |
| 4.3 General Discussion | 第52-58页 |
| 4.3.1 Effect of Level of Task-induced Involvement on VocabularyAcquisition | 第52-55页 |
| 4.3.2 Effect of Word Concreteness on Vocabulary Acquisition | 第55-56页 |
| 4.3.3 Effect of Level of Task-induced Involvement and WordConcreteness Interaction on Vocabulary Acquisition | 第56-58页 |
| Chapter Five CONCLUSION | 第58-63页 |
| 5.1 Major Findings | 第58-59页 |
| 5.2 Pedagogical Implications | 第59-61页 |
| 5.3 Limitations and Suggestions for Future Study | 第61-63页 |
| REFERENCES | 第63-67页 |
| APPENDIX Ⅰ | 第67-70页 |
| APPENDIX Ⅱ | 第70-73页 |
| APPENDIX Ⅲ | 第73-74页 |
| APPENDIX Ⅳ | 第74-75页 |
| APPENDIX Ⅴ | 第75-76页 |
