The whole article is about this study if anyone wants to skip to the source: https://dl.acm.org/doi/abs/10.1145/3368089.3409712 https://dl.acm.org/doi/abs/10.11

The whole article is about this study if anyone wants to skip to the source: https://dl.acm.org/doi/abs/10.1145/3368089.3409712 https://dl.acm.org/doi/abs/10.1145/3368089.3409712 tldr; More students solved the problem when there was no proctor in the room. The effect was especially pronounced with women.