Yıl 2018, Cilt 5, Sayı 2, Sayfalar 301 - 313 2018-03-30
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## Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models

#### Seher Yalçın [1]

##### 157 551

The purpose of this study is to determine the best IRT model [Rasch, 2PL, 3PL, 4PL and mixed IRT (2 and 3PL)] for the science and technology subtest of the Transition from Basic Education to Secondary Education (TEOG) exam, which is carried out at national level, it is also aimed to predict the item parameters under the best model. This study is a basic research as it contributes to the information production which is fundamental for test development theories. The study group of the research is composed of 5000 students who were randomly selected from students who participated in TEOG exam in 2015. The analyses were carried out on 17 multiple choice items in TEOG science and technology subtest. When model fit indices were evaluated, the MixIRT model with two parameters and three latent classes was found to fit the data best. According to this model, when the difficulties and discrimination averages of the items are taken into account, it can be expressed that items are moderately difficult and discriminative for students in latent class-1; the items are considerably easy and able to slightly distinguish the students in  latent class-2; the items are difficult to the students in the third latent class and they can slightly distinguish the students in this group.

Item response theory, Latent class models, Mixed item response theory, model-data fit
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Birincil Dil en Eğitim, Bilimsel Disiplinler July Makaleler Orcid: 0000-0003-0177-6727Yazar: Seher Yalçın (Sorumlu Yazar)Kurum: Ankara ÜniversitesiÜlke: Turkey
 Bibtex @araştırma makalesi { ijate402806, journal = {International Journal of Assessment Tools in Education}, issn = {}, eissn = {2148-7456}, address = {İzzet KARA}, year = {2018}, volume = {5}, pages = {301 - 313}, doi = {10.21449/ijate.402806}, title = {Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models}, key = {cite}, author = {Yalçın, Seher} } APA Yalçın, S . (2018). Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models. International Journal of Assessment Tools in Education, 5 (2), 301-313. DOI: 10.21449/ijate.402806 MLA Yalçın, S . "Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models". International Journal of Assessment Tools in Education 5 (2018): 301-313 Chicago Yalçın, S . "Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models". International Journal of Assessment Tools in Education 5 (2018): 301-313 RIS TY - JOUR T1 - Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models AU - Seher Yalçın Y1 - 2018 PY - 2018 N1 - doi: 10.21449/ijate.402806 DO - 10.21449/ijate.402806 T2 - International Journal of Assessment Tools in Education JF - Journal JO - JOR SP - 301 EP - 313 VL - 5 IS - 2 SN - -2148-7456 M3 - doi: 10.21449/ijate.402806 UR - http://dx.doi.org/10.21449/ijate.402806 Y2 - 2018 ER - EndNote %0 International Journal of Assessment Tools in Education Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models %A Seher Yalçın %T Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models %D 2018 %J International Journal of Assessment Tools in Education %P -2148-7456 %V 5 %N 2 %R doi: 10.21449/ijate.402806 %U 10.21449/ijate.402806 ISNAD Yalçın, Seher . "Data Fit Comparison of Mixture Item Response Theory Models and Traditional Models". International Journal of Assessment Tools in Education 5 / 2 (Mart 2018): 301-313. http://dx.doi.org/10.21449/ijate.402806