Risman , Davis : Are girls hardwired to want pink princess Halloween costumes ? They say some scientists think lower testosterone in utero makes girls passive , `` girly '' Their own study shows the testosterone has less affect than messages from parents . Writers : What do you mean by that?
Risman , Davis : Are girls hardwired to want pink princess Halloween costumes ? They say some scientists think lower testosterone in utero makes girls passive , `` girly '' Their own study shows the testosterone has less affect than messages from parents . Writers : Girls encouraged by parents to be independent , active became assertive women .