摘要：In this study, we aimed to compare the difficulty indices predicted by experts and calculated empirically for multiple choice test items. The participants of the research consisted of 10 experts from the field of measurement and evaluation in education, and 222 teacher candidates who study at the education faculty of a state university in Turkey. We collected research data via a measurement-evaluation achievement test developed by the ourselves and containing 25 multiple choice items. The research results revealed that there were positive correlations range through .25 to .71 between item difficulties estimated by experts and the difficulty indices calculated empirically. Nevertheless, we did not observe a clear pattern among the correlation coefficients that can be attributed to the titles of the experts or to whether they had taught the related course before.
关键词：Item difficulty;expert opinion;estimation of item difficulty index;item analysis.
