So why don’t I say what I take to be the general theme after glancing through the essay. you can then see if that really is the theme and, if so, use it to help you paraphrase three particular paragraphs:

Traditionally people have thought men are smarter than women. When scientists measured brain size, they assumed that men were smarter and looked for evidence to support this. So they found that men’s brains were bigger and thus concluded that men are smarter. But they should not have assumed. They should have more carefully analyzed the evidence. For instance, does a bigger brain always mean smarter? Men are generally bigger than women, is intelligence more a matter of brain size in relation to the person’s over-all size? They didn’t test this because they assumed men were smarter so whatever argument would support this assumption was accepted without question. More research is needed. But in the end we shouldn’t rely on this sort of comparison between groups. Individual variation matters much more and we shouldn’t make one group think that it is limited and incapable of acheiving just because we think there’s some scientific difference between the groups.

Now, if that makes any more sense to you (and Gould wrote far better than I do, so it might not) you can try to use it as a guide when you yourself paraphrase three particular paragraphs. If it doesn’t help, keep trying. According to Gould you probably have an excellent brain.