The hour that matters is the one after someone raises a hard point. The person who can show the team what that hour sounds like is the person who runs the meeting. Judge a day on candour by whether that team leader practises a better reply on a concern the team already has.
Amy Edmondson has had to correct a soft reading of the idea. HBS Online records her warning that too many people think psychological safety means feeling comfortable all the time, and that anything hard to achieve requires being uncomfortable along the way. The same piece defines the aim as a group where people offer opinions, suggest ideas, ask questions, raise concerns and admit mistakes without fearing punishment. It lists four elements a team needs together: a willingness to help, inclusion, an attitude to risk and failure that favours learning, and conversation people experience as open. A day that coaches the team to stay pleasant, and never touches a disagreement, has missed the definition she is using.
What the team leader should practise
HBS Online describes a concrete practice drawn from Per Hugander and the Swedish bank SEB, which Edmondson calls a jazz dialogue. The rules are short enough to use in a real meeting: listen more than you speak, build on what someone else just said, and respond to what is emerging in the room, including the point you did not plan to hear. A psychological safety workshop for team leaders should put the leader inside that exchange, on a disagreement from their own week, with the people who will hear the reply on Monday. The leader says the reply out loud on that live concern. A lecture about the research, with the leader watching from the back, leaves the sentence unsaid.
The same article points at Edmondson's psychological safety scale: statements the team rates, then averaged by question, so you can see where help, risk and candour are thin. Use it at the start of the day and agree which one or two items the leader will work on. Six weeks later you can ask the same questions and see whether the hard point gets a different reply. A session with no read on the team can still feel moving. You will have nothing solid to compare.
How to read the agenda
Read the agenda before you pay. You want the team leader named as a participant for the whole practice, a live concern from their own meeting, a short diagnostic, and time to rehearse the reply out loud. You want the comfort warning on the page, so the room does not leave treating ease as the goal. Collective Campus builds high-performance teams for the AI world. The psychological safety workshop is built around that practice: the leader's role, a read on the team, and candour used live, with standards kept high.
What a day aimed at managers should change afterwards is in psychological safety training for managers. The questions worth asking any provider before you book are in what to ask before a psychological safety workshop. Add one of your own to that list: which real meeting will we rerun, and who plays the leader.
The check six weeks later
Ask the leader for the concern they practised and for what they said the next time it came up. Ask one person who was in the room whether that reply matched the rehearsal. If the meeting is unchanged, the room learned the vocabulary and the reply stayed the same. Run the scale again if you used it. A flat result is a reason to change the next session before you book the same day for another team. Bring the meeting and the leader. We will shape the day around the reply they have to give.
