Sheila Craft-Morgan writes: “Citations are a key measure of the impact of a researcher’s work. However, research in a variety of disciplines has found that women are less likely to be cited than men; citations contain geographic bias; and the Matthew effect—in which those who begin with advantage continue to gain advantage—leads to more citations for prominent scholars in a specific discipline. These findings contribute to the notion that scholarly knowledge comes from a homogenous group of researchers, thereby overlooking the contributions of other groups.”