Behavioral scientist Jon Levy’s new research, featured in Fortune CHRO, reveals that overloading teams with high-achievers can actually tank performance. Why? Egos and self-interest often crowd out collaboration. The real differentiator isn’t individual brilliance — it’s the people who make others better. “Glue players” connect teams, amplify strengths, and create psychological safety that unlocks collective genius. These are the leaders who make you feel there’s a better fut