“Girls do not have the intellectual stability and are, therefore, unable to make profound inquries with a sharp mind and appreciate the depth of the Torah. It is possible thay by using their own minds, they will transgress the Torah.
Tur (Yoreh Deah 246, 15)
Most women’s minds are not geared toward being taught, but if she had begun to study properly herself, not making Torah into foolishness, she is no longer like most women and she is rewarded…
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Both (and really most, if not all) the sources cited, were from a time when women did not go to Yeshivah, and basically knew nothing except possibly how to daven from a siddur. They learned the laws of Taharas Hamishpacha, how to kasher meat, bensch licht and take hafrasha when they would bake challah, but other than that, learning was done only by males. There were some notable exceptions in Jewish history, but primarily women did not learn. Nowadays, there is no frum woman who does not go to Yeshivah. I would venture to say that women know Chumash, Navi, Jewish History and Hashkafa as well as and better than most men, because most men do not continue to learn Nach when they reach the age of learning Talmud. It is erroneous to believe that women are not geared towards learning. That is a generalization. SOME women (like SOME men) may not be able to grasp Talmudic concepts, but then again, many of them absolutely can, particularly if they would be taught those concepts at the same age that the boys are first taught them.