I don't think it's cognitive dissonance; they're not ignoring information that conflicts with their belief system. What you hear is what you get: they honestly don't care. The info doesn't impact their belief system even if they digest every morsel of it. For many women, such gender generalization isn't a threat in the first place. Maybe it's trust in one's own personal ability to defy stereotypes, and maybe it's that many women don't identify with the mass "woman" demographic as much as they identify with other, more specific demographics. Increasingly, kids attend coed schools and play on coed sports teams throughout their formative years. "Sister solidarity" never happens for many at all. More than identifying themselves by their gender, young girls first define themselves by socioeconomic status, race, popularity, attractiveness, intelligence, etc. I'm sad to hear Young Denby was heckled by chauvinist jerks. For many young girls, though, other women are more the enemy than men.