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by Ginka Toegel, Jean-Louis Barsoux Published November 5, 2025 in Leadership (Brain Circuits) • 3 min read
These undiscussables are collectively held, unconscious behaviors—the most difficult to uncover. Team members may notice isolated problems in their dynamic but cannot connect the dots to identify root causes. As a result, they often jump to the wrong conclusions about what drives team inefficiencies and poor performance, which can cause anxiety. Though unnoticed by the team, such behavior patterns may be readily discernible to outsiders.
Go through this checklist to see whether team members’ interactions seem anxious or defensive:
Unconscious and unacknowledged undiscussables manifest in seemingly unrelated team dynamics (hence the difficulty in connecting the dots). Teams instinctively develop defensive routines to cope with anxiety, such as that generated by feeling collectively ignored or undervalued. This allows them to avoid thinking about or even naming the underlying issues. Behavior patterns that emerge from anxiety begin on an unconscious level, then become part of “the way we do things.” People fall into rigid roles, sit in the same chairs, and follow rituals that impair their ability to question assumptions and get their jobs done.
Team leaders often underestimate the consequences of doing nothing to address undiscussables, which almost invariably results in strained working relationships. High-performing teams pay attention not only to what they achieve, but how they achieve it by working together. This does not come naturally: you have to work at it and introduce routines and forums to purge your team of undiscussables before they take root and cause problems. Tackling the taboos brings relief, boosts energy, bolsters team goodwill, and boosts organizational performance.
Don’t mention it! Is it time to tackle your team’s taboos? Part 1
Don’t mention it! Is it time to tackle your team’s taboos? Part 2
Don’t mention it! Is it time to tackle your team’s taboos? Part 3
Let’s Talk: Why It’s Time to Stop Avoiding Taboo Topics at Work

Professor of Organizational Behavior and Leadership at IMD
Ginka Toegel is a teacher, facilitator, and researcher in the areas of leadership and human behavior. Specialized in providing one-to-one leadership coaching and team-building workshops to top management teams in both the public and private sector, her major research focuses on leadership development, team dynamics, and coaching. She is also Director of the Strategies for Leadership program and the Mobilizing People program.

Research Professor at IMD
Jean-Louis Barsoux helps organizations, teams, and individuals change and reinvent themselves. He was educated in France and the UK, and holds a PhD in comparative management from Loughborough University in England. His doctorate provided the foundation for the book French Management: Elitism in Action (with Peter Lawrence) and a Harvard Business Review article entitled The Making of French Managers.

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