(CBSNews) - In 1978, the first vintage that Cathy Corison made wine, she could count on one hand the number of women she knew of doing the same kind of work in the cellars of the Napa Valley. Without using all her fingers. Nearly 35 years later, Corison needs a lot more fingers. Winemaking remains primarily a man's world, but research by Santa Clara University professors Lucia Albino Gilbert and John Gilbert has found that nearly 10 percent of California wineries now have women as the main or lead winemaker. Their second finding: Women winemakers tend to be more highly acclaimed than their male counterparts.