Increasingly, it is female executives who are abandoning corporate jobs to start their own businesses. This is a dangerous brain-drain for companies.

Why? Because these women have some of the highest scores on assessments of leadership. On three vital attributes—tolerance of ambiguity, intellectual curiosity, and emotional intelligence—female entrepreneurs outscore both men and women in the corporate C-suite. These strengths are among the most sought-after in 21st century executives.

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