Tomas Chamorro-Premuzic, a psychologist and chief talent scientist at ManpowerGroup, says we're not picking leaders in the right way. While we should be promoting people based on their competence and potential, it's often the incompetent, overconfident candidates -- most of them men -- who get ahead. Studies show that, by many measures, women are actually better equipped to become strong, successful managers. But the solution to getting more of them into the executive ranks isn't quotas or other initiatives that mandate gender diversity. To improve leadership across the board, we need to focus on the metrics proven to enhance performance and set higher standards for everyone. Chamorro-Premuzic is also a professor of business psychology at University College London and Columbia University, and the author of the book "Why Do So Many Incompetent Men Become Leaders?: (And How to Fix It)" (Harvard Business Review Press, 2019).