TY - JOUR T1 - Two-phase item selection procedure for flexible content balancing in CAT JF - Applied Psychological. Measurement Y1 - 2007 A1 - Cheng, Y A1 - Chang, Hua-Hua A1 - Yi, Q. VL - 3 ER - TY - CONF T1 - Identifying practical indices for enhancing item pool security T2 - Paper presented at the annual meeting of the National Council on Measurement in Education (NCME) Y1 - 2005 A1 - Yi, Q. A1 - Zhang, J. A1 - Chang, Hua-Hua JF - Paper presented at the annual meeting of the National Council on Measurement in Education (NCME) CY - Montreal, Canada ER - TY - JOUR T1 - a-Stratified multistage CAT design with content-blocking JF - British Journal of Mathematical and Statistical Psychology Y1 - 2003 A1 - Yi, Q. A1 - Chang, H.-H. VL - 56 ER - TY - CONF T1 - Effects of test administration mode on item parameter estimates T2 - Paper presented at the annual meeting of the National Council on Measurement in Education Y1 - 2003 A1 - Yi, Q. A1 - Harris, D. J. A1 - Wang, T. A1 - Ban, J-C. JF - Paper presented at the annual meeting of the National Council on Measurement in Education CY - Chicago IL N1 - {PDF file, 233 KB} ER - TY - CONF T1 - Implementing the a-stratified method with b blocking in computerized adaptive testing with the generalized partial credit model T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 2003 A1 - Yi, Q. A1 - Wang, T. A1 - Wang, S JF - Paper presented at the annual meeting of the American Educational Research Association CY - Chicago IL N1 - #YI03-01 {PDF file, 496 KB} ER - TY - JOUR T1 - Data sparseness and on-line pretest item calibration-scaling methods in CAT JF - Journal of Educational Measurement Y1 - 2002 A1 - Ban, J-C. A1 - Hanson, B. A. A1 - Yi, Q. A1 - Harris, D. J. KW - Computer Assisted Testing KW - Educational Measurement KW - Item Response Theory KW - Maximum Likelihood KW - Methodology KW - Scaling (Testing) KW - Statistical Data AB - Compared and evaluated 3 on-line pretest item calibration-scaling methods (the marginal maximum likelihood estimate with 1 expectation maximization [EM] cycle [OEM] method, the marginal maximum likelihood estimate with multiple EM cycles [MEM] method, and M. L. Stocking's Method B) in terms of item parameter recovery when the item responses to the pretest items in the pool are sparse. Simulations of computerized adaptive tests were used to evaluate the results yielded by the three methods. The MEM method produced the smallest average total error in parameter estimation, and the OEM method yielded the largest total error (PsycINFO Database Record (c) 2005 APA ) VL - 39 ER - TY - CONF T1 - Incorporating the Sympson-Hetter exposure control method into the a-stratified method with content blocking T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 2002 A1 - Yi, Q. JF - Paper presented at the annual meeting of the American Educational Research Association CY - New Orleans, LA N1 - PDF file, 387 K ER - TY - CONF T1 - a-stratified CAT design with content-blocking T2 - Paper presented at the Annual Meeting of the Psychometric Society Y1 - 2001 A1 - Yi, Q. A1 - Chang, Hua-Hua JF - Paper presented at the Annual Meeting of the Psychometric Society CY - King of Prussia, PA N1 - {PDF file, 410 KB} ER - TY - JOUR T1 - A comparative study of on line pretest item—Calibration/scaling methods in computerized adaptive testing JF - Journal of Educational Measurement Y1 - 2001 A1 - Ban, J. C. A1 - Hanson, B. A. A1 - Wang, T. A1 - Yi, Q. A1 - Harris, D. J. AB - The purpose of this study was to compare and evaluate five on-line pretest item-calibration/scaling methods in computerized adaptive testing (CAT): marginal maximum likelihood estimate with one EM cycle (OEM), marginal maximum likelihood estimate with multiple EM cycles (MEM), Stocking's Method A, Stocking's Method B, and BILOG/Prior. The five methods were evaluated in terms ofitem-parameter recovery, using three different sample sizes (300, 1000 and 3000). The MEM method appeared to be the best choice among these, because it produced the smallest parameter-estimation errors for all sample size conditions. MEM and OEM are mathematically similar, although the OEM method produced larger errors. MEM also was preferable to OEM, unless the amount of timeinvolved in iterative computation is a concern. Stocking's Method B also worked very well, but it required anchor items that either would increase test lengths or require larger sample sizes depending on test administration design. Until more appropriate ways of handling sparse data are devised, the BILOG/Prior method may not be a reasonable choice for small sample sizes. Stocking's Method A hadthe largest weighted total error, as well as a theoretical weakness (i.e., treating estimated ability as true ability); thus, there appeared to be little reason to use it VL - 38 ER - TY - CONF T1 - Comparison of the SPRT and CMT procedures in computerized adaptive testing T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 2001 A1 - Yi, Q. A1 - Hanson, B. A1 - Widiatmo, H. A1 - Harris, D. J. JF - Paper presented at the annual meeting of the American Educational Research Association CY - Seattle WA ER - TY - CONF T1 - Data sparseness and online pretest calibration/scaling methods in CAT T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 2001 A1 - Ban, J A1 - Hanson, B. A. A1 - Yi, Q. A1 - Harris, D. JF - Paper presented at the annual meeting of the American Educational Research Association CY - Seattle N1 - Also ACT Research Report 2002-1) ER - TY - CONF T1 - Impact of scoring options for not reached items in CAT T2 - Paper presented at the annual meeting of the National Council on Measurement in Education Y1 - 2001 A1 - Yi, Q. A1 - Widiatmo, H. A1 - Ban, J-C. A1 - Harris, D. J. JF - Paper presented at the annual meeting of the National Council on Measurement in Education CY - Seattle WA N1 - PDF file, 232 K ER - TY - CONF T1 - Effects of nonequivalence of item pools on ability estimates in CAT T2 - Paper presented at the annual meeting of the National Council on Measurement in Education Y1 - 2000 A1 - Ban, J. C. A1 - Wang, T. A1 - Yi, Q. A1 - Harris, D. J. JF - Paper presented at the annual meeting of the National Council on Measurement in Education CY - New Orleans LA N1 - PDF file, 657 K ER - TY - ABST T1 - Multiple stratification CAT designs with content control Y1 - 2000 A1 - Yi, Q. A1 - Chang, Hua-Hua CY - Unpublished manuscript ER - TY - CONF T1 - Adjusting "scores" from a CAT following successful item challenges T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 1999 A1 - Wang, T. A1 - Yi, Q. A1 - Ban, J. C. A1 - Harris, D. J. A1 - Hanson, B. A. JF - Paper presented at the annual meeting of the American Educational Research Association CY - Montreal, Canada N1 - #WA99-01 {PDF file, 150 KB} ER - TY - CONF T1 - Comparison of the a-stratified method, the Sympson-Hetter method, and the matched difficulty method in CAT administration T2 - Paper presented at the annual meeting of the Psychometric Society Y1 - 1999 A1 - Ban, J A1 - Wang, T. A1 - Yi, Q. JF - Paper presented at the annual meeting of the Psychometric Society CY - Lawrence KS N1 - #BA99-01 ER - TY - ABST T1 - Simulating nonmodel-fitting responses in a CAT Environment (Research Report 98-10) Y1 - 1998 A1 - Yi, Q. A1 - Nering, M, L. CY - Iowa City IA: ACT Inc. (Also presented at National Council on Measurement in Education, 1999: ERIC No. ED 427 042) N1 - #YI-98-10 ER -