'Career Choices of Female Engineers' by National Academy of Sciences, is a report, which proves my argument of the unsure nature of the male, once again. Here it says, despite decades of government, university, and employer efforts, there exist a gender gap in engineering. And that women make up only 11 percent of practicing engineers in the United States.
The report goes deeper into the likely causes of such things becoming gender dependent. It cites greater likelihood of women selecting management and other streams of engineering that promises wider interactions with others, while men giving preference to technologically harder areas of patenting and fieldwork.
This substantiates my view that it is the frequent exposition to changes in the working environment, which attracts the male. And the familiar ambience of human oriented transactions keeps the females tied to their choice.