A Generalizability Analysis of the Reliability of Measurements: "An Example of Cell Division and Heredity Unit"
Abstract
The
purpose of the study is to measure students' performance through different measurement
tools and compare the findings through G Theory in order to identify the errors
associated with the raters and items to improve the future applications. The
sample consisted of 48 eighth graders in Kars. Two different types of exams (a
multiple choice test and an essay) were applied and essays were graded by three
raters. G and K analyses were performed on the results. According to the
findings, the error rate was higher for the essays in comparison to multiple-choice
test. The mean score was higher for the multiple-choice test, the variances
were similar. There were no differences among the essay scores given by
different raters. Findings of decision study indicated Student facet as the
main source of the variation in the data for both types of the measurements.
Keywords
References
- Aiken, L.R. (1991). Psychological testing and assessment (7. baskı). Boston: Allyn and Bacon.
- Alharby, E.R. (2006). A comparison between two scoring methods, holistic vs. Analytic using two measurement models, the Generalizability Theory and the many facet Rasch measurement within the context of performance assessment. Unpublished doctoral dissertation. The Pennsylvania State University Faculty of Education, Pennsylvania.
- Alkahtani, S.F. (2012). Oral performace scoring using generalizability Theory and many-facet Rasch measurement: a comparison study. Unpublished doctoral dissertation. The Pennsylvania State University, Pennsylvania.
- Atılgan, H. (2004). Genellenebilirlik Kuramı ve çok değişkenlik kaynaklı rasch modelinin karşılaştırılmasına ilişkin bir araştırma. Yayınlanmamış doktora tezi. Hacettepe Üniversitesi Sosyal Bilimler Enstitüsü, Ankara.
- Au, F., Prahardhi, S., & Shiell, A. (2008). Reliability of two instruments for critical assessment of economic evaluations. Value in Health, 11, 435- 439.
- Başol, G. (2008). Bilimsel araştırma süreci ve yöntem. İçinde Kılıç, O. & Cinoğlu M. (Ed.), Bilimsel araştırma yöntemleri, Bölüm 5, İstanbul: Lisans Yayıncılık.
- Başol, G. (2016). Eğitimde ölçme ve değerlendirme. Genişletilmiş 4. Baskı, Ankara: Pegem Yayıncılık.
- Bottema-Beutel, K., Lloyd, B., Carter, E.W. & Asmus, J.M. (2014). Generalizability and decision studies to inform observational and experimental research in classroom settings. American Journal on Intellectual and Developmental Disabilitie, 119(6), 589–605.
Details
Primary Language
English
Subjects
Studies on Education
Journal Section
Research Article
Publication Date
July 1, 2017
Submission Date
April 5, 2017
Acceptance Date
March 28, 2017
Published in Issue
Year 2017 Volume: 4 Number: 2
Cited By
Development Study of an Achievement Test Regarding 6th Grade Light and Sound Subject
SDU International Journal of Educational Studies
https://doi.org/10.33710/sduijes.577411