scholarly journals Location Indices for Ordinal Polytomous Items Based on Item Response Theory

2015 ◽  
Vol 2015 (2) ◽  
pp. 1-13 ◽  
Author(s):  
Usama S. Ali ◽  
Hua-Hua Chang ◽  
Carolyn J. Anderson
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Response Theory ◽  
Polytomous Items

Item Response Theory for Scores on Tests Including Polytomous Items with Ordered Responses

1995 ◽  
Vol 19 (1) ◽  
pp. 39-49 ◽  
Author(s):  
David Thissen ◽  
Mary Pommerich ◽  
Kathleen Billeaud ◽  
Valerie S. L. Williams
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Response Theory ◽  
Polytomous Items

scholarly journals An Extension of Testlet-Based Equating to the Polytomous Testlet Response Theory Model

2022 ◽  
Vol 12 ◽  
Author(s):  
Feifei Huang ◽  
Zhe Li ◽  
Ying Liu ◽  
Jingan Su ◽  
Li Yin ◽  
...  
Keyword(s):  
Item Response Theory ◽  
Sample Size ◽  
Item Response ◽  
Theory Model ◽  
Response Theory ◽  
Polytomous Items ◽  
Testlet Response Theory ◽  
Accurate Performance ◽  
The Impact ◽  
Item Response Theory Models

Educational assessments tests are often constructed using testlets because of the flexibility to test various aspects of the cognitive activities and broad content sampling. However, the violation of the local item independence assumption is inevitable when tests are built using testlet items. In this study, simulations are conducted to evaluate the performance of item response theory models and testlet response theory models for both the dichotomous and polytomous items in the context of equating tests composed of testlets. We also examine the impact of testlet effect, length of testlet items, and sample size on estimating item and person parameters. The results show that more accurate performance of testlet response theory models over item response theory models was consistently observed across the studies, which supports the benefits of using the testlet response theory models in equating for tests composed of testlets. Further, results of the study indicate that when sample size is large, item response theory models performed similarly to testlet response theory models across all studies.

scholarly journals Is the Polythetic Approach Efficient in Identifying Potentially Addicted to Work Individuals? Comparison of the Polythetic Approach With the Item Response Theory Framework

2019 ◽  
Author(s):  
Piotr Bereznowski ◽  
Roman Konarski
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Latent Trait ◽  
Substantial Effect ◽  
Prevalence Rates ◽  
Response Theory ◽  
Polytomous Items ◽  
Work Addiction ◽  
Trait Level ◽  
Theory Framework

This study included investigation of efficiency of the threshold used to classify symptoms as present, investigation of efficiency of the cut-off point used to identify potentially addicted to work individuals, investigation of magnitude of the problem of class overlap, and investigation of effects of dichotomization of polytomous items on the estimates of the latent trait level. The sample comprised 16,426 working Norwegians (M age = 37.31; SD = 11.36) who filled out the Bergen Work Addiction Scale (BWAS). The results showed that the difficulty/third threshold parameters corresponding to the threshold used to classify symptoms as present were lower than 1.5 for the items corresponding to tolerance and conflict and higher than or equal to 1.5 for the items corresponding to salience, mood modification, relapse, withdrawal, and problems. The cut-off point used to identify individuals as potentially addicted to work identified 411 individuals (31.9% of all individuals classified by the polythetic approach as potentially addicted to work) whose estimates of the latent trait level were lower than 1.5 as potentially addicted to work. The problem of class overlap (being classified by the polythetic approach into different class despite almost the same level of the latent trait) affected 4,686 individuals (28.5% of the whole sample). The dichotomization of polytomous items had a substantial effect on the estimates of the latent trait level. The findings show that the polythetic approach is not efficient in identifying potentially addicted to work individuals and that the prevalence rates of work addiction based on the polythetic approach are not trustworthy.

scholarly journals On the Connections Between Item Response Theory and Classical Test Theory: A Note on True Score Evaluation for Polytomous Items via Item Response Modeling

2017 ◽  
Vol 79 (6) ◽  
pp. 1198-1209 ◽  
Author(s):  
Tenko Raykov ◽  
Dimiter M. Dimitrov ◽  
George A. Marcoulides ◽  
Michael Harrison
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Classical Test Theory ◽  
Test Theory ◽  
True Score ◽  
Response Theory ◽  
Polytomous Items ◽  
Item Response Modeling ◽  
Classical Test ◽  
Response Modeling

This note highlights and illustrates the links between item response theory and classical test theory in the context of polytomous items. An item response modeling procedure is discussed that can be used for point and interval estimation of the individual true score on any item in a measuring instrument or item set following the popular and widely applicable graded response model. The method contributes to the body of research on the relationships between classical test theory and item response theory and is illustrated on empirical data.

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