"Housework was defined as “core chores,” or routine housework that people generally do not enjoy doing such as washing dishes, laundry, vacuuming floors and dusting … Routine housework, like cooking dinner or making beds, was captured … . Other activities such as home repairs, mowing the lawn, and shoveling snow were not in the study. Items such as gardening are usually viewed as more enjoyable; the focus here is on core housework."

Obviously completely BS biased sexist study. It doesn't get more blatant than that.