Temel Biyoteknoloji Bilgi Ölçeğinin (TBBÖ) Rasch Ölçüm Modeline Göre Geliştirilmesi

Year 2022, Volume: 16 Issue: 2, 354 - 380, 31.12.2022

Serap Öz Aydın , Mesut Saçkes , Nazlı Ruya Taşkın Bedizel , Aysun Sıcaker

https://doi.org/10.17522/balikesirnef.1217928

Abstract

Bu çalışmanın amacı, temel biyoteknoloji bilgisini ölçmek için bir ölçek geliştirmek, ölçeğin psikometrik özelliklerini incelemek ve öğrencilerin test performanslarında okul, sınıf ve cinsiyete göre farklılık olup olmadığını incelemektir. Bu ölçeğin geliştirme aşaması Türkiye'nin batısındaki bir ilde 388 lise öğrencisi örneklemi ile gerçekleştirilmiştir. Ölçeğin psikometrik özellikleri Rasch modeli kullanılarak incelenmiştir. 17 maddeden oluşan son ölçeğin K-R iç tutarlılık katsayısı 0,77 olarak hesaplanmıştır. Madde-toplam korelasyonlarının bir madde (Madde 1, 0.13) dışında 0.25 ile 0.48 arasında değiştiği görülmüştür. Rasch analizinin sonuçları, ölçeğin Rasch modeline uyduğunu ve düşük ve yüksek performanslı sınava girenleri ayırt edebildiğini göstermiştir. Üç Yönlü ANOVA sonuçları, okul değişkeni için önemli bir ana etki göstermiştir Ayrıca, biyoteknoloji bilgi puanları açısından sınıf ve cinsiyet değişkenleri arasında istatistiksel olarak anlamlı bir fark bulunamamıştır. Bununla birlikte, sınıf*cinsiyet etkileşimi, küçük etki boyutuna sahip erkeklerin lehine istatistiksel olarak anlamlı bulunmuştur. Gözlenen bu etkinin, 12. sınıf öğrencilerinin eşit olmayan örneklem büyüklüğünden kaynaklandığı düşünülmektedir. Bu da Temel Biyoteknoloji Bilgisi Ölçeğinin (TBBÖ) lise öğrencilerinin bilgi düzeylerini değerlendirmek için kullanılabileceğini göstermektedir

Keywords

biyoteknoloji, bilgi ölçeği, Rasch ölçüm modeli, ölçek geliştirme, biyoteknoloji, bilgi ölçeği, Rasch ölçüm modeli, ölçek geliştirme

Supporting Institution

Balikesir Üniversitesi Bilimsel Araştırma Projeleri Birimi

Project Number

2014/33

Development of Basic Biotechnology Knowledge Scale (BBKS) with Rasch Measurement Model

Abstract

The purpose of this study was to develop a scale to measure basic biotechnology knowledge, examine the psychometric properties of the scale, and investigate whether there are differences in the test performances of high school students in terms of school, grade, and gender. The development phase of this scale was carried out with a sample of 388 high school students in a province in the west of Turkey. The psychometric properties of the scale were examined using the Rasch model. The K-R internal consistency coefficient of the final scale consisting of 17 items was calculated as 0.77. It was observed that item-total correlations varied between 0.25 and 0.48 except for one item (item 1, 0.13). The results of the Rasch analysis indicated that the scale fits the Rasch model and can differentiate low and high performing test takers. Three-Way ANOVA results demonstrated a significant main effect for the school. There were no statistically significant differences for grade and gender variables in terms of their biotechnology knowledge scores. However, the grade*gender interaction was statistically significant favoring males with small effect size. This observed effect was possibly due to uneven sample size of 12th grade students. The overall results suggest that the Basic Biotechnology Knowledge Scale (BBKS) can be used to assess the knowledge level of high school students.

Keywords

biotechnology, knowledge measurement, Rasch measurement model, scale development, biyoteknoloji, bilgi ölçeği, Rasch ölçüm modeli, ölçek geliştirme

Project Number

2014/33

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