Abhay Aneja and colleagues reveal that daughters of civil servants who were more exposed to female co-workers during WWI were significantly more likely to work. For each standard deviation increase in exposure to female co-workers, the gender gap in labor force participation for children narrowed by over 4 percentage points. This represents a 9% decline in the average labor force participation gap. Importantly, these effects were

• Driven by increased labor force participation of daughters (sons are unaffected)
• Strongest for children who, at the time of exposure, were teenagers
• Present even for children who moved away from their parents’ original city

Here is the full post.