From Pew Research:

Corporations have spent millions of dollars on diversity training programs to make managers more sensitive to minorities but these efforts have "roundly failed" to eliminate bias or increase the number of minorities in management, according to a team of sociologists headed by Frank Dobbin of Harvard University.

Dobbin and his colleagues Alexandra Kalev of the University of California-Berkeley and Erin Kelly of the University of Minnesota examined a sampling of reports submitted to the Equal Employment Opportunity Commission by private sector establishments and surveyed the history of their diversity programs. Touchy-feely programs that emphasize mentoring and networking failed to reduce bias complaints or increase the number of minority mangers. Only targeted programs in which senior managers were held accountable for increasing the number of women and minorities in management worked, they reported in the latest issue of the American Sociological Review.

In fact, they found diversity training may actually reduce diversity: Such programs were followed by a 6 percent decline in the proportion of black women in management, they found.

Source: http://pewresearch.org/obdeck/index.php?ObDeckID=64

What sort of implications do you see for ministry?  How do we get people to do what they should when it seems that telling them what they should do may decrease the chance that they do it?