I don’t think black girls put out earlier as a racial group. What I think is happening is that so many black children are being raised by single parents, mostly moms. These kids are not being supervised properly and are being exposed to more sexuality at an early age, i.e. TV programs, videos, maybe mom is bringing home multiple men in her quest to find the perfect husband and father. This is not just a black activity but as always we get hit harder by any social difficulty more than nonblacks.