Ability Estimation Using the Classical Test Theory and Three-Parameter Item Response Theory Model
Journal Title: Psychology and Education: A Multidisciplinary Journal - Year 2022, Vol 4, Issue 3
Abstract
This study aimed to estimate and compare the academic abilities of the students using the Classical Test Theory (CTT) and the Item-Response Theory (IRT) models. Specifically, the Bayesian modal or maximum a posteriori (MAP) under the three-parameter logistic model of IRT was used as ability estimator. The study involved a total of 52 Grade 11 students in a descriptive-quantitative approach using Microsoft Excel, R, and SPSS software in the data calculation. The findings revealed that 30 (57.69%) students passed and 22 (42.31%) failed under the CTT approach. However, under the IRT approach, 34 (65.38%) passed while the remaining 18 failed. Moreover, when the CTT and IRT results were compared, it produced significant results indicating that transmuted grades of the students were higher under IRT than CTT. Furthermore, the results of the two approaches showed significant relationship further providing a better picture of the comparison. In this study, IRT appeared to provide more details/information about student performances/abilities than the CTT and thus the use of IRT in the ability estimation is recommended. In addition, Bayesian modal or MAP appeared to work well as ability estimator and thus its employment is likewise encouraged.
Authors and Affiliations
Bayah Amiruddin, Mercedita Langamin
Keywords
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- EP ID EP728147
- DOI https://doi.org/10.5281/zenodo.7063805
- Views 40
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