I don't know of any specific research, but again, this has been spoken about at this table earlier.
Depending on your socio-economic level, you have more or less access to those people who can in fact be the influences. Someone at the higher economic level can have access to people, neighbours, and family who are in fact engineers, lawyers, or whatever. Unfortunately, those at the lower level of the socio-economic stream may not necessarily have access to that and therefore not have access to those role models.
That's unfortunate. If you recognize that reality, can you build a program that in fact will somehow address that reality? Can you take young women and bring them into a laboratory at the community college?