Recently updated research shows that women in leadership positions are perceived as being every bit as effective as men. In an analysis of thousands of 360-degree assessments, women were rated as excelling in taking initiative, acting with resilience, practicing self-development, driving for results, and displaying high integrity and honesty. What’s holding them back is most often not lack of capability, but a dearth of opportunity.
You can find full details on the study in Women Score Higher Than Men in Most Leadership Skills by authors Jack Zenger and Joseph Folkman.