List of Symbols and Abbreviations
Chapter 1 Introduction
1．1 Research Background
1．2 Research Objective
1．3 Research Questions
1．4 Research Methods
Chapter 2 Literature Review
2．1 Item Response Theory
2．1．1 History ofIRT
2．1．2 Basic Assumptions of IRT
2．1．3 Dichotomous IRT Models
2．1．4 Polytomous IRT models
2．1．5 A Comparison between IRT and CTT
2．2 Computerized Adaptive Testing
2．2．1 Introduction
2．2．2 Working Procedure
2．2．3 IRT Model
2．2．4 Item Pool
2．2．5 Item Selection
2．2．6 Ability Estimation
2．2．7 Stopping Rule
2．3 Validation of both PPLT and CALT
2．3．1 PreviouS Research on Test Validation
2．3．2 New AUA Framework
2．4 Current Research on CALT
2．4．1 Studies Abroad
2．4．2 Domestic Studies
2．5 Implication for This Study
Chapter 3 Item Bank Construction
3．1 Introduction
3．2 Methods
3．2．1 Original Data Analysis
3．2．2 Instruments
3．2．3 Procedures
3．2．4 Data Analysis
3．3 Results and Discussions
3．3．1 Uni-dimensionality Assumption
3．3．2 Local Independence Assumption
3．3．3 Item Calibration
3．3．4 DIF Analysis
3．3．5 Resuhs for Item Bank Distribution
3．3．6 Discussion under the AUA Framework
3．4 Conclusion
Chapter 4 Design， Operation and Validation of a CALT System
4．1 Introduction
4．2 Methods
4．2．1 CALT Design Overview
4．2．2 Participants
4．2．3 Instruments
4．2．4 Procedures
4．2．5 Data Analyses
4．3 Results and Discussions
4．3．1 Construct Measured by the CALT and CBLT
4．3．2 Influence of Computer Familiarity
4．3．3 Factorial Invariance of the CALT across Gender
4．4 Discussion in the Context of the AUA
4．5 Conclusion
Chapter 5 Conclusions
5．1 Findings
5．2 Implications
5．2．1 Theoretical Implications
5．2．2 Practical Implications
5．3 Suggestions for Future Research
References
Appendix 1
A sample paper of the Computer-based English proficiency test
Part Ⅰ Cloze
Part Ⅱ Grammar Multiple Choice
Part Ⅲ Vocabulary Multiple Choice
Appendix 2
A sample score report of the Computer—adaptive English proficiency test
考试成绩报告
分数解释
Appendix 3
Appendix 4
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