(HealthNewsDigest.com) - WASHINGTON - Nearly 40 percent of women who earn engineering degrees quit the profession or never enter the field, and for those who leave, poor workplace climates and mistreatment by managers and co-workers are common reasons, according to research presented at the American Psychological Association's 122nd Annual Convention.

While women accounted for more than 20 percent of engineering school graduates over the past two decades, only 11 percent of practicing engineers are women, and only 9 percent of electronic and environmental engineers are, said Nadya Fouad, PhD, of the University of Wisconsin-Milwaukee. She presented findings from the first phase of a three-year National Science Foundation study that surveyed 5,300 engineering alumnae spanning six decades, mostly from the 30 universities with the highest number of women engineering graduates and from 200 other universities.

While 62 percent of the women surveyed persisted in their careers as engineers, 11 percent never entered the field, 21 percent left more than five years ago, and 6 percent left less than five years ago. Among women who left less than five years ago, two-thirds said they pursued better opportunities in other fields while a third stayed home with children because companies didn't accommodate work-life concerns, Fouad said. Among those who went to other industries, 54 percent became executives, 22 percent were in management and 24 percent worked as staff members.

"These findings are likely to apply to women working in fields where there are less than 30 percent women. These women are more vulnerable to being pushed out because they typically aren't in the internal 'good old boys' network," Fouad said. "This may not apply to women working in other professions, but the findings do apply to management practices in all fields in terms of the importance of providing opportunities for training and advancement as well as encouraging a healthy work-life balance."