There weren't enough men in the study to be sure about any gender differences.
There have also been some gender differences found as well in the same study.
The gender difference is not just in physical labor jobs.
Other studies, however, have found no gender difference in pay negotiations.
In these questions, they found that the gender difference was extremely small.
However this gender difference disappeared beyond 85 years of age.
I was pretty shocked by the gender differences between men and women.
The gender difference and food sharing both seem to make sense in that light, also.
"The issue of gender difference is far more complex than comes through in my comments," he wrote.
It strikes me that there must be a gender difference here.