Madde Tepki Kuramına Dayalı Gerçek Puan Eşitlemede Ölçek Dönüştürme Yöntemlerinin İncelenmesi

Yıl 2022, , 1 - 36, 31.03.2022

Ömay Çokluk-bökeoglu , Arzu Uçar , Ebru Balta

https://doi.org/10.30964/auebfd.1001128

Cited By: 1

Öz

Bu araştırmada, Madde Tepki Kuramı’na (MTK) dayalı gerçek puan eşitlemede, ölçek dönüştürme yöntemlerinin (ortalama-ortalama (OO), ortalama-standart sapma (OS), Stocking-Lord (SL), Haebara (HB)) farklı koşullar altında eşitleme hatalarının karşılaştırılması amaçlanmıştır. Araştırmanın amacı doğrultusunda, yöntemlerin hatalarını karşılaştırmak için örneklem büyüklüğü (500, 1000, 3000, 10000), test uzunluğu (40, 50, 80), ortak madde oranı (%20-%30-%40), parametre kestirim modeli (iki ve üç parametreli lojistik model (2PLM ve 3PLM)) ve grupların yetenek dağılımı (benzer (N(0-1) - N(0-1)), farklı (N(0-1) - N(0.5,1)) koşulları altında 2PLM ve 3PLM’ye uyumlu iki kategorili 50 yineleme ile 7200 veri seti oluşturulmuştur. Veri toplamı deseni olarak “denk olmayan gruplarda ortak madde/test (NEAT) deseni” kullanılmıştır. Veri üretiminde ve analizinde R yazılımı kullanılmıştır. Araştırmadan elde edilen bulgular, eşitleme hatası (RMSD) ölçütüne göre değerlendirilmiştir. Çalışmanın sonucunda, tüm koşullar göz önünde bulundurulduğunda, SL yönteminin RMSD değerlerinin, diğer yöntemlere göre daha yüksek olduğu görülmekle birlikte, OO ve OS yöntemlerinin birbirine benzer RMSD değerleri ürettiği görülmüştür. Ayrıca, ölçek dönüştürme yöntemlerine ilişkin RMSD değerleri karşılaştırıldığında, 2PLM ve 3PLM’nin kullanıldığı durumlarda benzer sonuçlar elde edildiği, örneklem büyüklüğü ve test uzunluğu arttıkça SL yöntemi dışında diğer yöntemlerin eşitleme hatalarında azalma oluştuğu ve ortak madde oranının %40 ve grupların yetenek dağılımının benzer olduğu durumlarda, yöntemlerin, RMSD değerlerinin daha düşük olduğu gözlenmiştir.

Anahtar Kelimeler

Haebara, MTK gerçek puan eşitleme ortalama-ortalama, ortalama-standart sapma, ölçek dönüştürme, Stocking-Lord, test eşitleme

Investigation of Scale Transformation Methods in True Score Equating Based on Item Response Theory

Öz

In this research, it was aimed to compare equating errors of scale transformation methods (mean-mean (MM), mean-sigma (MS), Heabera (HB) and Stocking-Lord (SL)) in true score equating based on item response theory (IRT) under different conditions. In line with the purpose of the study, 7200 dichotomous data sets which were consistent with two and three- parameter logistic model were generated with 50 replication under the conditions of sample size (500, 1,000, 3,000, 10,000), test length (40, 50, 80), rate of the common item (20%, 30%, 40%), type of model used in parameter estimation (two and three-parameter logistic models (2PLM and 3PLM)), and ability distribution of groups (similar (N(0-1) - N(0-1)), different (N(0-1) - N(0.5,1)) for the obtained performance of methods. Common item nonequivalent groups equating design was used. R software was used for data generation and analyses. The results obtained from the study were evaluated by using equating error (RMSD) criterion. As a result of the study, considering all the conditions, it was seen that the RMSD values of the SL method were higher than the other methods, but it was seen that the MM and MS methods produced similar RMSD values. In addition, when the RMSD values of the scale transformation methods are compared, similar results are obtained in cases where 2PLM and 3PLM are used, as the sample size and test length increase, equating errors of other methods except the SL method decrease, and It was observed that the methods had lower RMSD values in cases where the common item rate is 40% and the ability distribution of the groups is similar.

Anahtar Kelimeler

Haebara, IRT true score equating, mean-mean, mean-sigma, scale transformation, Stocking-Lord, test equating

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