Yes, girls mature faster than boys. This is because of mainly two reasons. The first one is obviously genetics is the cause of it. And the second reason is there surroundings. They are taught so many things by their mothers or their family members which are not at all taught to a boy in the childhood. People set the boys free to play and don’t give any responsibility on them at the childhood. Whereas girls are taught constantly that even if you are a child you have some responsibility because you are a girl. While doing household duties parents always tell there girl child to do it. Everyone around her try to teach her something new everyday like you should do this, you should not do this, you should not ask this, you should behave like this, you should learn this, etc…And always the concluding line is like “this will be useful after your marriage” or “what will you do if you don’t learn do these things?”. They keep on putting more and more responsibility on her head as she grows up. but no one says these things to boys until they completely grow up and reach a mature age. Because of this things girls mature faster than boys.