Ditto that. When I went to GIS school for two months, a two-thirds male field, in the last week I finally realized that most of the women sat in the last two rows at the back of class. A few women kind of floated around, sometimes in front, sometimes elsewhere. I was the only woman who consistently sat in the very front row. I was perceived of as extremely aggressive. I had not even noticed it until nearly the end of the program. I get into all kinds of hot water for thinking I'm just another person and behaving "just like anyone would (regardless of gender)" and having that interpreted as ultra aggressive. I strongly suspect that if I were male, much of my behavior would be interpreted as meek and mild-mannered.