I wonder if they controlled for age in this study. Women in the sciences are younger than men (on average), so a dual-female paper is more likely to be from two contemporaries, while a dual-male paper could more easily be from an old prof and a young one.  From what I&#x27;ve seen, the more established author tends to get more of the credit&#x2F;prestige, even though the less-established one tends to do more of the work.