Recently, researchers have reformulated Item Response Theory (IRT) models into multilevel models to evaluate clustered … correspond directly with IRT models’ parameters is often referred to as multilevel measurement modeling. Unlike conventional IRT …).Limitations in terms of the minimum sample size and number of test items that permit reasonable one-parameter logistic (1-PL) IRT …

Item Response Theory (IRT) models are the basis of modern educational measurement. In order to increase testing … IRT assumption of local independence. However, a set of measurement models, testlet response theory (TRT), has been …

study distinctive response time models incorporated in IRT were compared, and the relationship between item characteristics …

Item-level fit indices (IFI) in item response theory (IRT) are designed to assessthe degree to which an estimated item … parameters was also examined. The crossedbetween-subjects conditions were: IRT model (1-, 2-, and 3 parameter); data noise … influenced by IRT model and discrimination; only for LM(b) did empiricalsampling distributions tend to approach theoretical …

Magistro baigiamajame darbe nagrinėjami IRT įgalinti paslaugų gamybos ir prekybos pokyčiai, kuriuos kai kurie … esminėmis laikytinomis paslaugų savybėmis pagrįstas teorinis modelis, nagrinėjamas IRT, kaip pamatinio pokyčių veiksnio …

To address the lack of attention to construct shift in IRT vertical scaling, a bifactor model is proposed to estimate … addition, the unidimensional IRT (UIRT) estimation model that ignores construct shift is examined to represent the current … practice for IRT vertical scaling; comparisons on parameter estimation accuracy of the bifactor and UIRT models are discussed …

This dissertation compares the parameter estimates obtained from two item response theory (IRT) models: the 1-PL IRT … model and the MC1-PL IRT model. Several scenarios were explored in which both unidimensional and multidimensional item … scenarios, the MC1-PL IRT model showed greater precision in the recovery of the true underlying item difficulty values and …