You know I never thought about all the mean girls - do they thrive in a single sex environment?
I think that mean girls thrive everywhere, but that the adults do make somewhat of a difference. I don't know how to answer this question, because how could anyone know...
but I do know that 'empowerment' can be a double-edged sword. Add 'entitlement' into the mix and I think that there is the potential for mean girls to thrive in an 'exclusive' all-female environment. I can think of several adult 'all-female' environments where they do.
I think sexism is in play wherever one goes, unless specific intentions are in place. I have experienced that in a world throughly soaked in sexism, that it will show up in all-female environments as 'Mean Girl' behavior.
my.02$
Grinity