> I would recommend reading the book "Delusions of Gender"

> to learn how all of those studies have proven flawed/heavily biased

Notice the extreme impression you've gotten from this book. She does not "prove" flaws in all research on this topic, though often her criticisms are valid she chooses areas to criticize and hints that it's representative of all research that show gender differences.

She could have also chosen to criticize studies which attempt to disprove gender differences, which are often just as flawed.