I believe female aggressiveness is due to television programming and the unwillingness of parents to monitor their children. Take a look at all the children movies out now eg. Bratz movies, Hannah Montana, High school musical etc. They all teach that it's ok for a girl to like a guy and even pursue him at a very young age. Imagine your child who is in standard 1 Primary School, watching boys and girls holding hands , kissing and claiming to be in love.