Supplemental Material, DESCRIPTION for IRTGUI: An R Package for Unidimensional Item Response Theory Analysis With a Graphical User Interface by Huseyin Yildiz in Applied Psychological Measurement
Items are located in order of difficulty (from high AR to low AR). † degrees of freedom (620,4); *Bonferroni adjustment with a probability base of 0.01 (p = 0.005 for 20 items); note item 12 of border