The numbers and graphs in the report by Lean In and McKinsey & Company, Women in the Workplace 2015, support some beliefs, and challenge some myths, about why women remain underrepresented at the executive level of American business. What about gender bias? The report concludes that women are more likely than men to perceive gender bias. Of course they do! One of the recommendations of the study is training to “interrupt gender bias,” including to assure men can see and understand the challenges women encounter.