in a contemporary world, do women still perform more housework than men, or does the gender role attitude change about division of labor?

The research question: in a contemporary world, do women still perform more housework than men, or does the gender role attitude change about division of labor?
My attribute of this topic is same-sex couples.
The hypothesis if wives are more likely to do more in the household.
The level of measurement: in our research topic, the most appropriate level of measurement will be nominal because the variable of gender is mutual exclusiveness.
Since I had done presentation on this topic, so there are three articles will be the basic information for this paper.
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