People can think well of their manager and still swallow a suggestion that would have helped. Ask for the time someone was punished for speaking, and the story often is not there. The quiet does not need a fresh example. It needs a rule the person already treats as obvious.
James R. Detert and Amy C. Edmondson studied those rules in Implicit voice theories, Academy of Management Journal, 2011. Across four studies they treat implicit voice theories as taken-for-granted beliefs about when speaking up is risky or inappropriate. In a large corporation, 190 interviews found that reluctance shows up even when the suggestion would help the organisation. Open responses from 185 working adults tested whether the same beliefs travelled. Two further studies, in samples of more than 300 adults, built measures for five of them. Those measures predicted silence beyond the individual and organisational factors already used to explain it.
The rules they kept finding
They name five. Presumed target identification means someone higher up will hear a suggestion as criticism of a process they own, even when the comment is an idea for improvement rather than a complaint. A second belief is that you need solid data, or a polished solution, before it is safe to speak. A third is that you do not go around your boss. A fourth is that you do not embarrass the boss in public, so the hard point is raised in private if it is raised at all. A fifth is that speaking up costs you later work, or the way you are remembered.
The beliefs are often untested. Asked what would make a hard question dangerous, and whether it had happened, one financial analyst said they had never seen it. The rule had no recent case. It still governed the choice to stay quiet. A day that hunts for a villain in the current boss will miss that. The rule can be older than the manager.
Why a good boss is not enough
Their discussion should change how you read an agenda. The beliefs come from self-protection, treat a safe moment as a dangerous one and are rarely checked against evidence. An open boss, or a less hierarchical structure, rarely gets enough attention to override them. If someone believes that speaking in public is risky, they stay quiet in that public moment even when the boss is good, the culture is supportive and the job is not on the line. A session that only coaches the leader's reply has worked on the context. It has not worked on the rule.
What the agenda should make people say
Ask which of the five is operating, in the words the group uses. Never embarrassing a senior person in the meeting is the public rule. Waiting until the analysis is finished is the data rule. Saving the point for a corridor, so the boss is not surprised in front of their own boss, is the bypass rule and the embarrassment rule together. Write the sentence down. A pledge to be more open, with that sentence left implicit, leaves the rule in charge.
Then practise the comment the rule forbids. Make it an idea for improvement that touches something a senior person owns, said in the meeting before the data is complete. If the leader collects it afterwards in private, the public rule has been confirmed.
Collective Campus is building high-performance culture and teams for the AI world. The psychological safety workshop is for a group that can name the rule it already uses and then break it on a live comment. How to judge the leader's reply, once that comment is in the room, is in how to judge the day for team leaders. What to ask a provider before you book is in what to ask before you book. Why capable people go quiet in the first place is in why your best people stopped speaking up.
What to bring
Bring one suggestion people have been saving, and the sentence they use to justify the wait. If you cannot name either, the day will teach a friendlier tone and leave the rule untouched.
