21.   But it does suggest that future brain imaging studies might take into account potential gender differences before reaching any conclusions, according to the researchers.

22.   But there was no gender difference in the math and science scores for the United States and most other countries.

23.   But while she waxes eloquent about gender differences in the film business, she is quick to minimize her own success.

24.   Can you imagine these gender differences disappearing?

25.   Critics say the lack of women in positions of power reflects a conflict rooted in generational as well as gender differences.

26.   Gender differences play a role in the motives and rationales, experts say.

27.   In follow-up telephone interviews with teen-agers who had taken part in the survey, the gender differences were pronounced.

28.   Margaret Carlisle Duncan, an associate professor of human kinetics at the University of Wisconsin-Milwaukee, has researched gender differences in sports spectatorship.

29.   Meanwhile, new debates about gender difference emerged in brain research.