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we will never know for sure to what extent sex differences in STEM achievement... are genetic. In that case, we should not jump to the conclusion that any difference is either a flaw in the measuring instrument ("the SAT is biased") or the result of unequal opportunities...
Agreed! We ought not to presume. Until we do know, we can continue to discuss and explore. There is a current discussion thread with a similar theme here ... it is speaking of a district with more boys than girls identified for the gifted math class.