From Contexts of Cryptomnesia: May the Source Be with You (some of the data has been removed for readability):
Whereas new-errors (i.e., intrusions) were not affected by the composition of the dyad, dyad composition did affect participants’ tendency to take credit for their partner’s responses, with higher rates of plagiarism emerging in the same-sex than the mixed-sex groups. In addition, partner plagiarisms were more abundant than intrusion errors in both groups. Closer inspection of the reproductive errors in the mixed-sex dyads revealed no difference in men and women’s tendency to steal items from a partner of the opposite sex. As expected, however, women in the same-sex dyads were more likely than women in the mixed-dyads to steal an item from their partner.