Fig. 6: The Wright map of OE items, showing the difficulty of endorsing each item on a logit scale.

The y-axis ranges from −0.50 to 0.50, with positive values indicating items harder to endorse and negative values indicating items easier to endorse. Items are labeled ‘Y’ followed by their number (e.g., Y2, Y27) and positioned according to difficulty. Y27 is the hardest to endorse, while Y31 is the easiest. Items are plotted as a function of item measure.