| Acknowledgements | 第5-6页 |
| Abstract | 第6-8页 |
| 摘要 | 第9-15页 |
| Chapter One Introduction | 第15-21页 |
| 1.1 Background of the Study | 第15-18页 |
| 1.2 Research Purpose | 第18-19页 |
| 1.3 Research Questions | 第19页 |
| 1.4 Significance of the Study | 第19页 |
| 1.5 Organization of the Thesis | 第19-21页 |
| Chapter Two Literature Review | 第21-36页 |
| 2.1 The Length Approach | 第21-27页 |
| 2.1.1 The definition of the Length Approach (LA) | 第21-22页 |
| 2.1.2 The theoretical basis of the Length Approach | 第22-23页 |
| 2.1.3 The teaching philosophy of the Length Approach | 第23-24页 |
| 2.1.4 Research on the Length Approach | 第24-27页 |
| 2.1.4.1 Empirical research on the Length Approach | 第24-26页 |
| 2.1.4.2 Non-empirical research on the Length Approach | 第26-27页 |
| 2.2 Self-efficacy | 第27-34页 |
| 2.2.1 Definition of writing self-efficacy (WSE) | 第27-28页 |
| 2.2.2 The importance of self-efficacy | 第28-29页 |
| 2.2.3 Sources of self-efficacy | 第29-32页 |
| 2.2.4 Studies on self-efficacy | 第32-33页 |
| 2.2.5 Studies on writing self-efficacy | 第33-34页 |
| 2.3 Enlightenment of Previous Studies | 第34-36页 |
| Chapter Three Research Methodology | 第36-47页 |
| 3.1 Research Purpose and Questions | 第36页 |
| 3.2 Participants | 第36-37页 |
| 3.3 Instruments | 第37-40页 |
| 3.3.1 The questionnaire investigation | 第37-39页 |
| 3.3.1.1 The design and the purpose of LA questionnaire investigation | 第37-38页 |
| 3.3.1.2 The design and the purpose of WSE questionnaire investigation | 第38-39页 |
| 3.3.2 The Interview | 第39-40页 |
| 3.4 Procedure | 第40-46页 |
| 3.4.0 Experimental principle | 第41-42页 |
| 3.4.1 Devising writing tasks and scheduling time | 第42-43页 |
| 3.4.2 Composition scoring criteria | 第43-44页 |
| 3.4.3 Evaluation of composition | 第44-46页 |
| 3.4.3.1 Self-evaluation | 第44-45页 |
| 3.4.3.2 Peer assessment | 第45页 |
| 3.4.3.3 Teacher's evaluation | 第45-46页 |
| 3.5 Data Analysis | 第46-47页 |
| Chapter Four Results and Discussion | 第47-63页 |
| 4.1 Senior High School Students' Perception on LA | 第47-53页 |
| 4.1.1 Factor analysis of LA questionnaire investigation | 第47-48页 |
| 4.1.2 Results of LA questionnaire investigation before the experiment | 第48-49页 |
| 4.1.3 Results of LA questionnaire investigation after the experiment | 第49-50页 |
| 4.1.4 The comparisons between LA questionnaire investigation before and after the experiment | 第50-53页 |
| 4.2 Senior High School Students' WSE | 第53-56页 |
| 4.2.1 A general description of writing task self-efficacy before the experiment | 第53页 |
| 4.2.2 A general description of writing skill self-efficacy before the experiment | 第53-54页 |
| 4.2.3 A general description of WSE before the experiment | 第54-55页 |
| 4.2.4 Comparison of WSE before and after the experiment | 第55-56页 |
| 4.3 The Factors Influencing Students' WSE | 第56-58页 |
| 4.4 Relationship between LA and WSE | 第58-60页 |
| 4.5 The Interview Analysis | 第60-63页 |
| Chapter Five Conclusion | 第63-69页 |
| 5.1 Main Findings | 第63-64页 |
| 5.2 Implications of the Study | 第64-67页 |
| 5.2.1 Creating opportunities for students to experience success | 第65页 |
| 5.2.2 Giving more effective feedback to students | 第65页 |
| 5.2.3 Paying attention to role models, letting students appreciate peer success | 第65-66页 |
| 5.2.4 Cultivating students' good psychological quality, and overcoming English writing anxiety | 第66-67页 |
| 5.3 Limitations of the Study | 第67-68页 |
| 5.4 Suggestions for Further Research | 第68-69页 |
| References | 第69-75页 |
| Appendix Ⅰ The Length Approach Questionnaire Investigation | 第75-76页 |
| Appendix Ⅱ Senior High School Students' English Writing Self-efficacy QuestionnaireInvestigation | 第76-79页 |
| Appendix Ⅲ Contents of Semi-structured Interview | 第79-80页 |
| Appendix Ⅳ Six English Writings | 第80-83页 |
| List of Published Articles | 第83页 |
