Quoted: Janet Hyde, a professor of psychology and women?s studies at the University of Wisconsin-Madison, recently published a review of several years of studies on the math skills of boys and girls. The studies drew on international eighth-grade math tests, and Hyde and her colleagues found that the math abilities of both sexes were similar. Hyde has worked on this for a number of years, and she said that in 1990 the gap between male and female math abilities was wider than it is now.