From the press release [1]:
...
Specifically, the chairs say being discouraged from a STEM career is still an issue today for both female and underrepresented minority (URM) STEM undergraduate students (59 percent) and that traditional rigorous introductory instructional approaches that “weed out” students early on from STEM studies are generally harmful and more so to URM (56 percent) and female (27 percent) students compared to majority students (i.e. Caucasian and Asian males). Yet, a majority (57 percent) of the chairs do not see a need to significantly change their introductory instructional methods in order to retain more STEM students, including women and URMs.
The Bayer Facts of Science Education XV survey polled 413 STEM department chairs at the country’s leading research universities and those that produce the most African-American, Hispanic and American Indian STEM graduates. The survey asks the chairs, who are largely male (87 percent) and Caucasian (88 percent) to shed light on the undergraduate environment in which today’s female and URM STEM students make their career decisions.
...