The purpose of this research was to equate the test forms which were constructed in different conditions (sample size, ability distribution, length of test and model type) through scaling methods based on item response ...

The purpose of this study is to compare Generalizability Theory and Many Facet Rasch Measurement Model based on estimated parameters from raters’ assessment scores that obtained from Ice Skating World Championships. More ...

The purpose of this study was to investigate the effect of test length and sample size in Item Response Theory (IRT) on model-data fit, item parameters and standard error values. For this purpose, small (150, 250, 350, ...