What High-Performing Teams Really Have in Common

When Google launched Project Aristotle, they analyzed over 180 teams to answer a simple question:

“What makes some teams consistently more effective than others?”

They discovered that it wasn’t average IQ, seniority, personality mix, or even having “rock star” individuals. The most important factor, the foundation under all others, was psychological safety: a shared belief that the team is safe for interpersonal risk-taking.

In teams with high psychological safety, people feel safe to admit mistakes, ask questions, offer ideas, and challenge assumptions without fear of embarrassment or punishment.

Other research linked psychological safety to higher innovation, better decision-making, higher engagement, and lower turnover.

What Does Psychological Safety Sound Like Day-to-Day?

High-safety teams sound like:

• “I might be wrong here, but…”
• “Good catch, let’s fix it and learn from it.”
• “We want dissenting views; what are we missing?”

Low-safety teams sound like:

• “Let’s not bring that up; it never goes well.”
• “Just do what you’re told.”
• Silence during meetings, complaining afterward.

Harvard professor Amy Edmondson has a great TEDx Talk, “Building a Psychologically Safe Workplace,” where she outlines how leaders can create these conditions (if you’ve not seen this before, I strongly recommend watching it).

Your Leadership Role Is to Model and Protect

Simon Sinek’s talk, “Why Good Leaders Make You Feel Safe,” builds a strong case for real leadership being less about control and more about creating a circle of safety where people can focus on innovating, being creative, taking smart risks, and not worrying about having to defend themselves.

Practically, that means:

• Inviting input before you speak your opinion
• Thanking people for raising issues early, even when they’re inconvenient
• Owning your mistakes publicly, so others feel safe to do the same
• Protecting your team from unnecessary blame or politics so they can focus on solutions

When you combine growth mindset (we can learn and get better), emotional intelligence (we understand and manage emotions), and psychological safety (it’s safe to speak up), you create the conditions for high trust, high performance, and sustainable results.

Before you move on, please pause for just 30 seconds and ask yourself, “What’s one small change I can make this week/month that would increase psychological safety on my team?”