That study doesn't take into account children, which are a huge factor, I would imagine. In households with children it is common for the woman to assume the r

That study doesn't take into account children, which are a huge factor, I would imagine. In households with children it is common for the woman to assume the role as the primary caregiver while the man assumes the role of the provider. As such, I imagine the woman likely feels less pressure and has less time to pursue a higher pay, while inversely the man feels pressure to increase his pay to fulfill his assumed role in the family.