ERIC Number: EJ970742
Record Type: Journal
Publication Date: 2012
Abstractor: As Provided
Reference Count: 47
Detecting Local Item Dependence in Polytomous Adaptive Data
Mislevy, Jessica L.; Rupp, Andre A.; Harring, Jeffrey R.
Journal of Educational Measurement, v49 n2 p127-147 Sum 2012
A rapidly expanding arena for item response theory (IRT) is in attitudinal and health-outcomes survey applications, often with polytomous items. In particular, there is interest in computer adaptive testing (CAT). Meeting model assumptions is necessary to realize the benefits of IRT in this setting, however. Although initial investigations of local item dependence have been studied both for polytomous items in fixed-form settings and for dichotomous items in CAT settings, there have been no publications applying local item dependence detection methodology to polytomous items in CAT despite its central importance to these applications. The current research uses a simulation study to investigate the extension of widely used pairwise statistics, Yen's Q[subscript 3] Statistic and Pearson's Statistic X[superscript 2], in this context. The simulation design and results are contextualized throughout with a real item bank of this type from the Patient-Reported Outcomes Measurement Information System (PROMIS).
Descriptors: Test Items, Investigations, Simulation, Adaptive Testing, Information Systems, Item Response Theory, Computer Assisted Testing, Surveys, Outcome Measures, Statistics, Physicians, Outcomes of Treatment
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Publication Type: Journal Articles; Reports - Research
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