AŞAMALI TEPKİ MODELİ VE KLASİK TEST KURAMI ALTINDA ELDE EDİLEN TEST VE MADDE PARAMETRELERİNİN KARŞILAŞTIRILMASI

Bu çalışmanın temel amacı klasik test kuramı (KTK) ve aşamalı tepki modeli (ATM) altında Yapılandırmacı Öğrenme Ortamları Ölçeğinin kestirilen madde ve test parametrelerinin karşılaştırılarak, araştırmacılara hangi kuram altında kestirilen parametrelerin daha keskin ve güvenilir olduğunu sunmaktır. Geleneksel güvenirlik analizi ve özdeğer grafiği sonuçları veri grubunun tek boyutlu olduğunu ve ölçekten elde edilen sonuçların güvenilir olduğunu göstermektedir. Yapılandırmacı öğrenme ortamları ölçeği ortaokul formunun madde ortalaması 3,39 olarak hesaplanmış ve bu da orta düzeyde madde güçlüğüne karşılık gelmektedir. Madde ayırıcılık parametreleri incelendiğinde KTK altında 10 maddenin düşük ayırıcılığa sahip olduğu, ATM altında ise 3 maddenin düşük ayırıcılığa sahip olduğu ve ayırıcılık değerlerinin 0,61 ile 1,81 arasında değiştiği ortaya konmuştur. Her iki kuram altında madde ayırıcılık parametreleri arasında r=0,96 düzeyinde korelasyon bulunmuştur. Sonuç olarak her iki kuram altında kestirilen madde ve test parametrelerinin yüksek düzeyde ilişkili olduğu, model varsayımların karşılandığı ve sınırlılıkların göz önüne alındığı durumlarda her iki kuramında kullanılabileceği sonucuna ulaşılmıştır.

COMPARISON OF TEST AND ITEM PARAMETERS UNDER GRADED RESPONSE MODEL (IRT) AND CLASSICAL TEST THEORY

The primary objective of the present research was to investigate the test and item parameters of Constructivist Learnin Envirement Scale (CLES) under graded response model (GRM) and classical test theory (CTT) and submit the best model which was fitted to real data. The results from a traditionally reliability analysis and a eigenvalue plot indicated that CLES scale satisfied the unidimensionality assumption and reliable. The mean response of CLES scale items was 3,39 which reflected the fact that the items tended to have fairly moderate difficulty values overall. Regarding the item discrimination, there were 10 items with low discrimination values for CTT because their item dicsrimination values are less than 0,60 and .there was 3 items with a very low level for GRM analysis. Item discrimination parameters for each item ranged between 0,68 and 1,81. It should be noticed that item discriminations can be considered as generally adequate and efective at distinquishing among respondents based on their estimated trait levels. The discriminations from the graded response model and classical test theory analysis correlated highly (r=.96) with each other. As a result, it can be colcluded that item and test parameters were highly correlated and researchers could use two methods if their assumpions were met and limitations were considerd. 

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Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi-Cover
  • ISSN: 1303-0493
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 2000
  • Yayıncı: Abant İzzet Baysal Üniversitesi Eğitim Fakültesi
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