Which intervention most strongly fosters psychological safety in a team?

• A. Leaders model humility.
• B. Encourage speaking up.
• C. Learn from mistakes.
• D. Use structured debriefs.

Answer: (A)

Fostering psychological safety starts with leaders modeling humility. When leaders openly acknowledge what they don’t know, admit mistakes, and genuinely invite others’ input, they signal that contributions from all team members are valued and that taking risks won’t threaten status or authority. This creates trust and a norm where speaking up and sharing concerns feels safe.

From that foundation, other practices can take root: encouraging people to speak up is most effective when leaders have shown they welcome candor; learning from mistakes thrives in a non-punitive, humble environment; and structured debriefs work best when the climate supports open discussion. But humility from the top sets the tone and makes those practices possible in the first place, so it’s the strongest intervention for psychological safety.