Diversity is defined as those numerous elements of difference between groups of people that play significant roles in social institutions, including (but not limited to) race and ethnicity, gender, socioeconomic class, sexual orientation, and culture. Since doctoral degree recipients go on to assume roles as faculty and educators, diversity in doctoral programs is significant. By supporting graduate diversity across the academic disciplines, universities ensure that the nation's intellectual capacities and opportunities are fully realized.

The authors consider diversity...