Oh this one’s likely to stir a few people up. Interesting that they did eliminate some of the most obvious alternative explanations right off the bat though.
Unfortunately they don’t provide specific numbers for the difference so it could be a pretty marginal thing.
Husbands who do more traditionally female housework have less sex | ScienceBlog.com
Married men who spend more time doing traditionally female household tasks — including cooking, cleaning, and shopping — report having less sex than husbands
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