Nationally, men in colleges and universities currently outpace women in earning physics, engineering, and computer science (PECS) degrees by an approximate ratio of 4:1. To better understand the factors driving these gaps, NYU researchers analyzed bachelor's degrees awarded in the US from 2002–2022, and found that the most selective universities by math SAT scores have nearly closed the PECS gender gap, while less selective universities have seen it widen dramatically.
This is correlation and not necessarily causation, but it does line up with an important argument for DEI programs.
The argument is that DEI programs are for raising the bar; not lowering it.
This is based on the assertion that ability is equally distributed across different groups but opportunity is not. If you take that as a given then it stands to reason that overrepresentation of one group over others would be caused by less capable members of the overrepresented group being favored over more capable members of the other groups.
So, raising the bar would correct for that and result in greater diversity.
That being said, whether or not the test itself is biased would play a critical role in whether or not you actually see that corrective effect.