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Celen, Umit; Aybek, Eren Can – International Journal of Assessment Tools in Education, 2022
Item analysis is performed by developers as an integral part of the scale development process. Thus, items are excluded from the scale depending on the item analysis prior to the factor analysis. Existing item discrimination indices are calculated based on correlation, yet items with different response patterns are likely to have a similar item…
Descriptors: Likert Scales, Factor Analysis, Item Analysis, Correlation
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Aybek, Eren Can; Toraman, Cetin – International Journal of Assessment Tools in Education, 2022
The current study investigates the optimum number of response categories for the Likert type of scales under the item response theory (IRT). The data was collected from university students attend to mainly the faculty of medicine and the faculty of education. A form of the "Social Gender Equity Scale" developed by Gozutok et al. (2017)…
Descriptors: Likert Scales, Item Response Theory, College Students, Test Reliability
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Sahin, Murat Dogan; Aybek, Eren Can – International Journal of Assessment Tools in Education, 2019
This report aims to introduce the fundamental features of the free Jamovi software to academics in the field of educational measurement for use at undergraduate and graduate level research. As such, after introducing the R based interface and the integrated development environment, the core functions of Jamovi are presented, the installation for…
Descriptors: Computer Software, Statistical Analysis, Meta Analysis, Bayesian Statistics