“sissy boy syndrome” is an old psychology book which uses behavior reinforcement to show how mothers who reinforce girl behaviors in boys create this disorder in boys.
It probably works the same for little girls.
This is why homosexuals recruit so young in schools. They are distorting(abusing) normal development in growing children.
“show how mothers who reinforce girl behaviors in boys create this disorder in boys”
Not just this disorder either. It is quite common to find serial killers who were subject to the same type of thing by domineering mothers, being dressed in women’s clothing or made to “play act” as a girl. It seems to be one of those things that can trigger psychopathy and disassociative disorders.