Speelman and McGann have published a paper in Frontiers titled “Statements About the Pervasiveness of Behavior Require Data About the Pervasiveness of Behavior.” This is a nice companion piece to our Persons as Effect Sizes paper. Generally, the argument we are all making is that one must be careful to focus on the individuals in one’s study. Aggregate statistics do not tell the entire story of one’s data. OOM can be used to analyze the data presented by Speelman and McGann, as their pervasiveness index is equivalent to the Percent Correct Classifications (PCC) index. They also discuss setting up thresholds for determining the number of people classified correctly according to expectation. In OOM this goal is accomplished with the Classification Imprecision option available in most analyses.