The right brain is the source of creativity. To the degree that we are willing to put people into categorical boxes based on gender, then, most of us would put men into the left-brained box. I would have until recently. Until I attended a lecture by Patricia Sun. Later the audience questioned her and she offered a number of interesting observations on this point.
Men are just obstinate.
Interestingly, I have encountered the same pattern of reactions when mentioning Patricia Sun's remarks to a few friends. However, she did not think it would be a very marked tendency when compared to the range of differences within either gender. Clearly there is a range within each gender, and equally clearly there is overlap between the genders. Furthermore, I am convinced that one can say this with the same validity as saying that men tend to be taller and women shorter. There is an attractive symmetry to this idea.