You’ve hired talented people, set clear goals, and put solid processes in place. So why isn’t performance where it should be?
Often, the missing ingredient isn’t capability. It’s safety. When people don’t feel safe enough to speak up, challenge ideas, or admit mistakes, teams underperform regardless of how skilled they are. In high-stakes sectors such as pharmaceutical, life sciences, and technology, psychological safety at work isn’t a nice-to-have. It’s the foundation everything else depends on.
Here’s a story that might resonate.
“No one likes to deliver bad news to their boss. But that’s exactly what I had to do when a project I’d championed failed to deliver. I’d invested time and energy into it, and convinced others to do the same. I expected frustration or tough questions. Instead, my manager asked one simple thing: what did you learn? That moment changed everything. I realised they weren’t just being kind. They were deliberately creating conditions where the team could grow.”
That’s psychological safety at work. It turns setbacks into learning, and learning into sustained performance.
What Is Psychological Safety at Work?
The concept was developed by Harvard Business School professor Amy Edmondson, who defines psychological safety as the shared belief that it is safe to take interpersonal risks.¹ In practice, that means team members can speak up, ask questions, challenge ideas, and admit mistakes without fear of ridicule or retaliation.
Edmondson first observed this dynamic in medical teams: those that reported the most errors were actually the highest performers, not because they made more mistakes, but because they felt safe enough to surface them. That transparency created faster learning and better outcomes.
It is worth separating psychological safety from psychological wellbeing. Wellbeing refers to an individual’s internal state; psychological safety refers to the shared environment a team creates together. The two are connected. A psychologically safe team tends to support individual wellbeing. But they are not the same thing, and conflating them leads to well-intentioned but misdirected interventions.
Why Psychological Safety Matters for High-Performing Teams
Research consistently identifies psychological safety as one of the most significant factors in team effectiveness. Google’s Project Aristotle study, which analysed hundreds of internal teams, found it to be the single strongest predictor of performance, outranking individual talent, role clarity, and organisational structure.
When people feel genuinely safe at work, the results are visible. They are more willing to share unconventional ideas, flag risks before they escalate, and work through disagreement constructively rather than avoiding it. This matters particularly in science and technology environments, where complexity is high, timelines are tight, and the cost of silence can be considerable.
The signs of low psychological safety are often easier to spot than leaders expect. Projects stall because people hesitate to raise concerns early. Meetings feel polished but unproductive, with the real conversations happening in corridors afterwards. Capable people leave, not because the work isn’t interesting, but because they don’t feel heard.
CIPD research confirms that psychologically safe environments are associated with higher employee engagement, lower turnover, and stronger organisational performance.² The connection between team culture and business results is well established.
How to Tell If Your Team Feels Psychologically Safe
Edmondson developed a practical diagnostic that assesses psychological safety across three dimensions: individual safety (can people raise problems and admit mistakes without fear?), team respect (do people feel accepted and valued for their contributions?), and team learning (does the team actively reflect on mistakes and look for ways to improve together?).
Leaders often assume their team feels safe precisely because no one is raising concerns. The diagnostic frequently reveals a different picture. It is worth paying attention to the spread of responses across team members, not just the average score. Significant variation usually means psychological safety is not being experienced equally across the team, which is itself an important leadership signal.
Leadership Behaviours That Build Psychological Safety at Work
Psychological safety is shaped primarily by how leaders behave day to day. Five behaviours make a consistent difference.
Being vulnerable means admitting when you don’t have all the answers, sharing what you’ve learned from your own mistakes, and modelling the candour you want to see from others. Being transparent means communicating clearly what you know, what you don’t know, and how you plan to find out. Credibility is built through honesty, not certainty.
Fairness matters too. Leaders who actively audit their own processes, promotions, and workload distribution, and who ensure hybrid and remote team members feel equally visible and valued, create conditions where everyone can contribute fully. Being curious signals that different perspectives are genuinely welcome. Asking questions, encouraging dissent, and treating disagreement as useful rather than uncomfortable shifts the conversational norm of a team over time. Finally, being reasonable about expectations and workload protects the psychological safety leaders work hard to build. Unrealistic pressure undermines openness faster than almost anything else.
Five Ways to Build Psychological Safety in Your Team
Building psychological safety at work is an ongoing process, not a single initiative. These five steps provide a practical foundation.
Start by Naming It
Make psychological safety an explicit team priority. Most people default to protecting their professional reputation rather than taking interpersonal risks, unless they receive clear signals that candour is genuinely welcome. Naming it resets that default assumption.
Reframe Risk-Taking as a Team Asset
Help teams understand that not every idea will be taken forward, but all ideas are worth hearing; that constructive disagreement is valued when it leads to better outcomes; and that mistakes are learning opportunities rather than evidence of inadequacy. These norms need to be stated, not assumed.
Measure It Regularly
Use Edmondson’s diagnostic to track how team members experience psychological safety over time. Changes in the spread of scores are often more instructive than changes in the average, and tracking both helps identify whether progress is being made consistently across the team or only for some.
Encourage Open Dialogue
Create space in team conversations for people to build on each other’s thinking, listen actively, and respond to ideas as they develop, rather than waiting to deliver a prepared position. This shift, from competitive communication to genuinely collaborative dialogue, is one of the most visible signs of a psychologically safe team.
Keep Reassessing
Psychological safety requires maintenance. Check in with your team regularly, invite feedback on your own leadership behaviours, and be prepared to adapt. What works well for one team configuration may need revisiting as people, roles, and pressures change.

Frequently Asked Questions About Psychological Safety at Work
Psychological safety at work is the shared belief among team members that it is safe to speak up, ask questions, challenge ideas, and admit mistakes without fear of ridicule or retaliation. It matters because it underpins everything that makes a high-performing team function: honest communication, constructive risk-taking, and continuous learning. Research from Google’s Project Aristotle identified it as the single most important factor in team effectiveness, ahead of individual talent or role clarity. Without it, capable people self-censor, problems go unreported, and performance stalls.
The most widely used approach is Amy Edmondson’s psychological safety diagnostic, which assesses three dimensions: individual safety, team respect, and team learning. Leaders can administer this as a short survey and review both the average scores and the spread of responses across team members. Significant variation between individuals often reveals that psychological safety is not being experienced equally, which provides a more nuanced starting point for improvement than aggregate scores alone.
Psychological wellbeing refers to an individual’s internal state, including their emotional resilience, mental health, and ability to cope with stress. Psychological safety at work refers to the shared team environment: the degree to which people feel safe taking interpersonal risks with one another. The two are connected, as a psychologically safe team tends to support individual wellbeing, but addressing one does not automatically resolve the other. Leaders working to improve team performance need to attend to both.
Making Psychological Safety a Leadership Priority
Psychological safety at work is not a soft skill or a management trend. It is the condition that determines whether talented people bring their full capability to the work, or hold back.
The good news is that it is buildable. The behaviours covered in this post – being vulnerable, transparent, fair, curious, and reasonable – are learnable leadership habits. The diagnostic tools exist. The evidence is clear. The question for most leaders is not whether psychological safety matters, but where to start.
Start by naming it. Measure where the team is now. And commit to the small, consistent behaviours that signal, day after day, that speaking up here is safe.