Psychological Development and Education ›› 2002, Vol. 18 ›› Issue (4): 91-96.

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The New Improvement of Item Selection Method in Computerized Adaptive Testing(CAT)

ZHANG Zhong-hua1, XIE Xiao-qing2, ZHENG Ri-chang1   

  1. 1. BeiJing Normal University, 100875;
    2. BeiJing Language and Culture Universtiy, 100083
  • Online:2002-10-15 Published:2002-10-15

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Abstract: The traditional item selection method in CAT are facing more and more problems just like the safety of testing,item exposure rate and the balance of item usage etc.The new improvement of a-stratified selection method-A-STR and BAS-can partly solve these difficult problems.A-STR and BAS can effectively control the exposure rate of high discriminating items,increase the exposure rate of low discriminating items,balance the item usage,improve the testing efficiency and decrease the cost of testing management.BAS and a-STR provide a more powerful method for CAT item selection and also strike out a new idea for developing CAT in China.

Key words: item selection, item bank, CAT, A-STR, FSH, BAS

CLC Number: 

  • G449
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