You will need more citations to prove that point. Same publication, more recently published, "Two Types of Diversity Training That Really Work".
"For one, a recent meta-analysis of over 40 years of diversity training evaluations showed that diversity training can work, especially when it targets awareness and skill development and occurs over a significant period of time."
Of course, that's completely ignoring that there is far, far, far more to "liberal arts" than gender studies.