Basically when they told them that there are no gender differences men performed slightly better, when the told them that men will perform etter, the me performed a lot better, when they didn't say anything women and men performed equally. http://www.leedsbeckett.ac.uk/carnegie/learning_resources/LAW_PGCHE/SteeleandQuinnStereotypeThreat.pdf

This suggests that womens underperformance in tests aren't because women are less intelligent, but the fact that women are expected to underperform causes them to do so. Just something I thought the people here would find interesting