Chapter 1 Introduction 1.1 Overview 1.2 Background of L2 vocabulary acquisition research 1.3 Significance of this book Chapter 2 A review of theories and concepts of vocabulary knowledge 2.1 Introduction 2.2 Research on breadth and depth of vocabulary knowledge 2.3 Theories on lexical competence Chapter 3 Cognitive studies on L2 vocabulary acquisition 3.1 Introduction 3.2 Levels of processing and degree of encoding elaboration 3.3 Psycholinguistic processes in L2 vocabulary acquisition 3.4 Conceptual framework for L2 vocabulary acquisition based on Skehan's Information Processing Model Chapter 4 An empirical study on input processing in L2 vocabulary acquisition 4.1 Introduction 4.2 Method 4.3 Results 4.4 Discussion 4.5 Summary Chapter 5 An empirical study on output processing in L2 vocabulary acquisition 5.1 Introduction 5.2 Method 5.3 Results 5.4 Discussion 5.5 Roles of output in L2 vocabulary acquisition 5.6 Limitations of output processing in L2 vocabulary acquisition 5.7 Co-effect of input and output processing in L2 vocabulary acquisition 5.8 Summary Chapter 6 Conclusion 6.1 Introduction 6.2 Major findings 6.3 Contributions of the book 6.4 Pedagogical implications 6.5 Limitations of the book 6.6 Recommendations for further research Bibliography Appendixes Appendix A Reading passage one Appendix B Supplementary reading passages Appendix C Sample of instances in COCA Appendix D Word note distributed to the inductive group Appendix E Word list used in the deductive group Appendix F Reconstruction task for the output group Appendix G Vocabulary levels test Appendix H VKS Test and 12 Target Words Appendix I Two Supplementary Vocabulary Tests