Thus, note study authors Harry Reis and Bobbi Carothers, "The statement that men are more aggressive than women, for example, implicitly" -- but wrongly -- "assumes that there is one group of people who are high in aggression (men) and another group of people who are low in aggression (women)." Such an assumption would lead us to think that "Knowing only that a person was male, we could also infer that he would be relatively aggressive" -- and that he would demonstrate other qualities on which there are, on average, small differences between men and women. For instance, he would be "good in math, poor in verbal skills, primarily interested in short-term mating, less agreeable, and so on."