The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models
Yıl: 2019 Cilt: 6 Sayı: 4 Sayfa Aralığı: 568 - 579 Metin Dili: İngilizce DOI: 10.21449/ijate.581314 İndeks Tarihi: 15-04-2020
The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models
Öz: Item Response Theory (IRT) models traditionally assume a normaldistribution for ability. Although normality is often a reasonable assumptionfor ability, it is rarely met for observed scores in educational and psychologicalmeasurement. Assumptions regarding ability distribution were previouslyshown to have an effect on IRT parameter estimation. In this study, the normaland uniform distribution prior assumptions for ability were compared for IRTparameter estimation when the actual distribution was either normal oruniform. A simulation study that included a short test with a small sample sizeand a long test with a large sample size was conducted for this purpose. Theresults suggested using a uniform distribution prior for ability to achieve moreaccurate estimates of the ability parameter in the 2PL and 3PL models whenthe true distribution of ability is not known. For the Rasch model, an explicitpattern that could be used to obtain more accurate item parameter estimateswas not found.
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| APA | KARADAVUT T (2019). The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. , 568 - 579. 10.21449/ijate.581314 |
| Chicago | KARADAVUT Tuğba The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. (2019): 568 - 579. 10.21449/ijate.581314 |
| MLA | KARADAVUT Tuğba The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. , 2019, ss.568 - 579. 10.21449/ijate.581314 |
| AMA | KARADAVUT T The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. . 2019; 568 - 579. 10.21449/ijate.581314 |
| Vancouver | KARADAVUT T The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. . 2019; 568 - 579. 10.21449/ijate.581314 |
| IEEE | KARADAVUT T "The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models." , ss.568 - 579, 2019. 10.21449/ijate.581314 |
| ISNAD | KARADAVUT, Tuğba. "The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models". (2019), 568-579. https://doi.org/10.21449/ijate.581314 |
| APA | KARADAVUT T (2019). The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. International Journal of Assessment Tools in Education, 6(4), 568 - 579. 10.21449/ijate.581314 |
| Chicago | KARADAVUT Tuğba The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. International Journal of Assessment Tools in Education 6, no.4 (2019): 568 - 579. 10.21449/ijate.581314 |
| MLA | KARADAVUT Tuğba The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. International Journal of Assessment Tools in Education, vol.6, no.4, 2019, ss.568 - 579. 10.21449/ijate.581314 |
| AMA | KARADAVUT T The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. International Journal of Assessment Tools in Education. 2019; 6(4): 568 - 579. 10.21449/ijate.581314 |
| Vancouver | KARADAVUT T The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models. International Journal of Assessment Tools in Education. 2019; 6(4): 568 - 579. 10.21449/ijate.581314 |
| IEEE | KARADAVUT T "The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models." International Journal of Assessment Tools in Education, 6, ss.568 - 579, 2019. 10.21449/ijate.581314 |
| ISNAD | KARADAVUT, Tuğba. "The Uniform Prior for Bayesian Estimation of Ability in Item Response Theory Models". International Journal of Assessment Tools in Education 6/4 (2019), 568-579. https://doi.org/10.21449/ijate.581314 |
