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. (2002). Impact of test design, item quality and item bank size on the psychometric properties of computer-based credentialing exams. In Paper presented at the meeting of National Council on Measurement in Education. New Orleans.
xi02-01.pdf (499.56 KB). (2002). An investigation of procedures for estimating error indexes in proficiency estimation in CAT. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans LA.
. (2002). Item selection in computerized adaptive testing: Improving the a-stratified design with the Sympson-Hetter algorithm. Applied Psychological Measurement, 26, 376-392.
. (2002). Item selection in computerized adaptive testing: Improving the a-stratified design with the Sympson-Hetter algorithm. Applied Psychological Measurement, 26, 376-392.
. (2002). Optimum number of strata in the a-stratified adaptive testing design. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans LA.
we02-01.pdf (113.03 KB). (2002). Redeveloping the exposure control parameters of CAT items when a pool is modified. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans LA.
ch02-02.pdf (1.09 MB). (2001). Adaptation of a-stratified method in variable length computerized adaptive testing. In Paper presented at the annual meeting of the American Educational Research Association. Seattle WA.
we01-01.pdf (383.76 KB). (2001). A comparative study of on line pretest item—Calibration/scaling methods in computerized adaptive testing. Journal of Educational Measurement, 38, 191-212.
. (2001). A comparative study of on line pretest item—Calibration/scaling methods in computerized adaptive testing. Journal of Educational Measurement, 38, 191-212.
. (2001). Comparison of the SPRT and CMT procedures in computerized adaptive testing. In Paper presented at the annual meeting of the American Educational Research Association. Seattle WA.
. (2001). Comparison of the SPRT and CMT procedures in computerized adaptive testing. In Paper presented at the annual meeting of the American Educational Research Association. Seattle WA.
. (2001). Data sparseness and online pretest calibration/scaling methods in CAT. In Paper presented at the annual meeting of the American Educational Research Association. Seattle.
. (2001). Data sparseness and online pretest calibration/scaling methods in CAT. In Paper presented at the annual meeting of the American Educational Research Association. Seattle.
. (2001). An examination of item selection rules by stratified CAT designs integrated with content balancing methods. In Paper presented at the Annual Meeting of the American Educational Research Association. Seattle WA.
le01-01.pdf (295.52 KB). (2001). An examination of the comparative reliability, validity, and accuracy of performance ratings made using computerized adaptive rating scales. Journal of Applied Psychology, 86, 965-973.
. (2001). Impact of scoring options for not reached items in CAT. In Paper presented at the annual meeting of the National Council on Measurement in Education. Seattle WA.
yi01-01.pdf (231.72 KB). (2001). Impact of several computer-based testing variables on the psychometric properties of credentialing examinations. In Paper presented at the Annual Meeting of the National Council on Measurement in Education. Seattle WA.
. (2001). Impact of several computer-based testing variables on the psychometric properties of credentialing examinations (Laboratory of Psychometric and Evaluative Research Report No 393). Amherst, MA: University of Massachusetts, School of Education.
. (2001). Integrating stratification and information approaches for multiple constrained CAT. In Paper presented at the Annual Meeting of the National Council on Measurement in Education. Seattle WA.
le01-02.pdf (321.58 KB). (2001). An investigation of procedures for estimating error indexes in proficiency estimation in a realistic second-order equitable CAT environment. In Paper presented at the annual meeting of the American Educational Research Association. Seattle WA.
. (2001). Item selection in computerized adaptive testing: Should more discriminating items be used first?. Journal of Educational Measurement, 38, 249-266.
. (2001). Multidimensional adaptive testing using weighted likelihood estimation: A comparison of estimation methods. In Paper presented at the annual meeting of the National Council on Measurement in Education. Seattle WA.
ts01-01.pdf (987.66 KB). (2001). Nearest neighbors, simple strata, and probabilistic parameters: An empirical comparison of methods for item exposure control in CATs. In Paper presented at the annual meeting of the National Council on Measurement in Education. Seattle WA.
. (2001). Online item parameter recalibration: Application of missing data treatments to overcome the effects of sparse data conditions in a computerized adaptive version of the MCAT. Unpublished manuscript.
ha01-01.pdf (405.35 KB). (2001). Requerimientos, aplicaciones e investigación en tests adaptativos informatizados [Requirements, applications, and investigation in computerized adaptive testing]. Apuntes de Psicologia, 19, 11-28.
. (2001). Toepassing van een computergestuurde adaptieve testprocedure op persoonlijkheidsdata [Application of a computerised adaptive test procedure on personality data]. Nederlands Tijdschrift voor de Psychologie en haar Grensgebieden, 56, 119-133.
. (2001). Validity issues in computer-based testing. Educational Measurement: Issues and Practice, 20(3), 16-25.
. (2000). The choice of item difficulty in self adapted testing. European Journal of Psychological Assessment, 16(1), 3-12.
. (2000). Computerized adaptive rating scales (CARS): Development and evaluation of the concept. (Institute Rep No. 350). Tampa FL: Personnel Decisions Research Institute.
. (2000). Content balancing in stratified computerized adaptive testing designs. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans, LA.
le00-01.pdf (426.85 KB). (2000). Effects of nonequivalence of item pools on ability estimates in CAT. In Paper presented at the annual meeting of the National Council on Measurement in Education. New Orleans LA.
ba00-01.pdf (656.37 KB). (2000). Emergence of item response modeling in instrument development and data analysis. Medical Care, 38, II60-II65.
. (2000). Estimating Item Parameters from Classical Indices for Item Pool Development with a Computerized Classification Test. (No. Research Report 2000-4). Iowa City, Iowa: ACT, Inc.
. (2000). Item exposure control in computer-adaptive testing: The use of freezing to augment stratification. Florida Journal of Educational Research, 40, 28-52.
. (2000). Item response theory and health outcomes measurement in the 21st century. Medical Care, 38, II28-II42.
. (2000). Limiting answer review and change on computerized adaptive vocabulary tests: Psychometric and attitudinal results. Journal of Educational Measurement, 37, 21-38.
. (2000). Los tests adaptativos informatizados en la frontera del siglo XXI: Una revisión [Computerized adaptive tests at the turn of the 21st century: A review]. Metodología de las Ciencias del Comportamiento, 2, 183-216.
. (2000). A real data simulation of computerized adaptive administration of the MMPI-A. Computers in Human Behavior, 16, 83-96.
. (2000). A real data simulation of computerized adaptive administration of the MMPI-A. Computers in Human Behavior, 16, 83-96.
. (2000). A selection procedure for polytomous items in computerized adaptive testing (Measurement and Research Department Reports 2000-5). Arnhem, The Netherlands: Cito.
. (2000). Solving complex constraints in a-stratified computerized adaptive testing designs. In Paper presented at the annual meeting of the National Council on Measurement in Education. New Orleans, USA.
le00-02.pdf (347.05 KB). (2000). Sufficient simplicity or comprehensive complexity? A comparison of probabilitic and stratification methods of exposure control. In Paper presented at the annual meeting of the National Council on Measurement in Education. New Orleans LA.
. (1999). Adjusting "scores" from a CAT following successful item challenges. In Paper presented at the annual meeting of the American Educational Research Association. Montreal, Canada.
wa99-01.pdf (149.06 KB). (1999). Adjusting "scores" from a CAT following successful item challenges. In Paper presented at the annual meeting of the American Educational Research Association. Montreal, Canada.
wa99-01.pdf (149.06 KB). (1999). Benefits from computerized adaptive testing as seen in simulation studies. European Journal of Psychological Assessment, 15, 91-98.
. (1999). A comparative study of ability estimates from computer-adaptive testing and multi-stage testing. In Paper presented at the annual meeting of the National Council on Measurement in Education. Montreal Canada.
. (1999). Computerized adaptive assessment with the MMPI-2 in a clinical setting. Psychological Assessment, 11, 369-380.
. (1999). Developing computerized adaptive tests for school children. In . F. Drasgow and J. B. Olson-Buchanan (Eds.), Innovations in computerized assessment (pp. 93-115). Mahwah NJ: Erlbaum.
. (1999). The development of a computerized adaptive selection system for computer programmers in a financial services company. In . F. Drasgow and J. B. Olsen (Eds.), Innvoations in computerized assessment (p. 7-33). Mahwah NJ Erlbaum.
. (1999). An enhanced stratified computerized adaptive testing design. In Paper presented at the annual meeting of the American Educational Research Association. Montreal, Canada.
le99-01.pdf (477.89 KB). (1999). Item exposure in adaptive tests: An empirical investigation of control strategies. In Paper presented at the annual meeting of the Psychometric Society. Lawrence KS.
. (1999). Item nonresponse: Occurrence, causes and imputation of missing answers to test items. (M and T Series No 32). Leiden: DSWO Press.
. (1999). Item selection in computerized adaptive testing: improving the a-stratified design with the Sympson-Hetter algorithm. In Paper presented at the Annual Meeting of the American Educational Research Association. Montreal, CA.
. (1999). Limiting answer review and change on computerized adaptive vocabulary tests: Psychometric and attitudinal results. In Paper presented at the annual meeting of the National Council on Measurement in Education. Montreal, Canada.
. (1999). Reducing bias in CAT trait estimation: A comparison of approaches. Applied Psychological Measurement, 23, 263-278.
. (1999). Reducing item exposure without reducing precision (much) in computerized adaptive testing. In Paper presented at the annual meeting of the National Council on Measurement in Education. Montreal, CA.
. (1998). CAT item calibration. In Paper presented at the annual meeting of the National Council on Measurement in Education. San Diego.
. (1998). A comparison of maximum likelihood estimation and expected a posteriori estimation in CAT using the partial credit model. Educational and Psychological Measurement, 58, 569-595.