Sentence:  The chaplains' <WSD>psychograph</WSD> is notable because of the extreme variation in scores; thus on test 4 (opposites) the chaplains achieve a median score which is much higher than that of any other group, whereas on tests 2 (arithmetic) and 6 (number series completion) they fall considerably below the median for all officers. 
Meaning of the word marked with <WSD> tags:  One of various graphical representations of a cognitive or psychological profile.