This is completely anecdotal, but I've noticed that gender ratios in groups in general create pretty harmonouus groups if they fall in ranges of 40% - 60% or <1

This is completely anecdotal, but I've noticed that gender ratios in groups in general create pretty harmonouus groups if they fall in ranges of 40% - 60% or <10%. Like put 4 women and 6 men in a group, they come along. Or put one man and 9 women in a group, they come along. Put 3 guys and 7 women into a group and there is constant power struggle. This seems to be more true for kids. Small minority is likely to adapt or leave. Close to 50/50 ratio genders balance each other out. With strong minority the minority tries to have balanced group, but the majority wants to engage in "guy talk" or girl talk". The way men interact with other men and how women interact with other women seem to be one of the most distinct differences between genders.