So, scientists do find some differences, but they have largely failed to link these to differences in men’s and women’s observed emotions, cognition, or behavior. That is, we’ve found some differences, but we have no proof that they translate into anything. Moreover, new research suggests that differences we observe may be designed not to create differences between men and women, but to reduce them. The brain may have two strategies for achieving the same outcome or one difference may compensate for another. (For more, see Brain Gender by Melissa Hines.)
That’s one reason why Venker is wrong.
The second reason is even more damning. Most of the research attempting to explain gender difference assumes that there differences to explain. In fact, meta-analyses aimed at summarizing the literature on human sex differences and similarities in traits, personality, cognitive abilities, sexuality, temperament, and motor skills offer better evidence for similarity than difference. On the vast majority of traits, men and women overlap tremendously.