Scale Development Based on Item Response Theory: A Systematic Review
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Keywords:Classical test theory,, item response theory, scale development, systematic review
Classical test theory (CTT) and item response theory (IRT) are two fundamental approaches used in scale development research. Although CTT is the preferred methodology in scale development research in the Republic of Turkey, the IRT methodology has started to gain traction in recent years. In this study, we used the systematic review methodology to review scale development research in Turkey that used the IRT procedures. Results revealed that most of the studies were conducted in 2017. Most of the studies have a sufficient sample size. Exploratory factor analysis was used more than confirmatory factor analysis. Some studies failed to choose the proper IRT model, report and interpret item parameters, check IRT assumptions, and report and interpret information functions. We recommend some practical considerations to researchers in terms of IRT assumptions.
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