@inbook {2064,
	title = {Detecting Person Misfit in Adaptive Testing},
	booktitle = {Elements of Adaptive Testing},
	year = {2010},
	pages = {315-329},
	chapter = {16},
	doi = {10.1007/978-0-387-85461-8},
	author = {Meijer, R. R. and van Krimpen-Stoop, E. M. L. A.}
}
@article {411,
	title = {Detection of person misfit in computerized adaptive tests with polytomous items},
	journal = {Applied Psychological Measurement},
	volume = {26},
	number = {2},
	year = {2002},
	pages = {164-180},
	abstract = {Item scores that do not fit an assumed item response theory model may cause the latent trait value to be inaccurately estimated. For a computerized adaptive test (CAT) using dichotomous items, several person-fit statistics for detecting mis.tting item score patterns have been proposed. Both for paper-and-pencil (P\&P) tests and CATs, detection ofperson mis.t with polytomous items is hardly explored. In this study, the nominal and empirical null distributions ofthe standardized log-likelihood statistic for polytomous items are compared both for P\&P tests and CATs. Results showed that the empirical distribution of this statistic differed from the assumed standard normal distribution for both P\&P tests and CATs. Second, a new person-fit statistic based on the cumulative sum (CUSUM) procedure from statistical process control was proposed. By means ofsimulated data, critical values were determined that can be used to classify a pattern as fitting or misfitting. The effectiveness of the CUSUM to detect simulees with item preknowledge was investigated. Detection rates using the CUSUM were high for realistic numbers ofdisclosed items. },
	author = {van Krimpen-Stoop, E. M. L. A. and Meijer, R. R.}
}
@inbook {1814,
	title = {Detecting person misfit in adaptive testing using statistical process control techniques},
	year = {2000},
	address = {W. J. van der Linden, and C. A. W. Glas (Editors). Computerized Adaptive Testing: Theory and Practice. Norwell MA: Kluwer.},
	author = {van Krimpen-Stoop, E. M. L. A. and Meijer, R. R.}
}
@inbook {410,
	title = {Detecting person misfit in adaptive testing using statistical process control techniques},
	booktitle = {Computer adaptive testing: Theory and practice},
	year = {2000},
	pages = {201-219},
	publisher = {Kluwer Academic.},
	organization = {Kluwer Academic.},
	address = {Dordrecht, The Netherlands},
	keywords = {person Fit},
	author = {van Krimpen-Stoop, E. M. L. A. and Meijer, R. R.}
}
@booklet {1543,
	title = {Detection of person misfit in computerized adaptive testing with polytomous items (Research Report 00-01)},
	year = {2000},
	address = {Enschede, The Netherlands: University of Twente, Faculty of Educational Science and Technology, Department of Measurement and Data Analysis},
	author = {van Krimpen-Stoop, E. M. L. A. and Meijer, R. R.}
}
