Based in Melbourne, David Reed is a portfolio manager serving on an investment committee for a major financial group. This interview examines how groupthink shapes collective decisions, daily methods to counter bias, and best practices for promoting rigorous debate.
The mistake is assuming committees make better decisions just by pooling expertise. Each morning starts with reviewing the previous day’s minutes and preparing independent analysis before the group convenes. During meetings, it’s easy for consensus to develop too quickly, especially when senior voices dominate. To combat this, every proposal is reviewed anonymously at first, and dissent is actively encouraged. The group documents every challenge to the consensus, making sure alternative views are recorded before any decision is finalised.
The most rewarding part is seeing well-supported dissent actually improve outcomes—when someone challenges a popular view, and the group revises its position based on new evidence. The toughest challenge is breaking through politeness or hierarchy that discourages honest debate. Groupthink creeps in when members fear standing out, so it takes deliberate effort to make debate safe and expected.
Groupthink impacts investment committees by stifling dissent and reinforcing shared blind spots. For example, during one review, the committee almost approved a major asset shift based solely on recent trends, with little challenge. Only after a structured round of objections did risks become clear, and the decision changed. The process now mandates a devil’s advocate role at every meeting to surface overlooked risks.
New professionals should develop confidence in presenting alternative views, even when they’re in the minority. Document your reasoning and invite critical review. Over time, making dissent part of the routine improves not just outcomes, but also the credibility of the committee’s work.
In one case, a consensus-driven group approved a large allocation without considering the downside risk, leading to losses. After reviewing the process, we introduced anonymous polling and pre-meeting submissions. The outcome: more honest input, more robust debate, and fewer unchallenged assumptions. The key is to structure processes so that groupthink is actively countered, not just passively avoided.
