Board dysfunction isn’t usually a governance problem. It’s a biology problem. By the time directors reach the final session of a full day of meetings, they’ve already made somewhere in the neighborhood of 30,000 micro-decisions according to research conducted by PwC and the Wharton Neuroscience Initiative. No wonder decision 30,001 may not be the best of the bunch.

At Corporate Board Member’s Director Forum in Scottsdale, Paul DeNicola and Ariel Smilowitz of PwC’s Governance Insights Center led directors through a session to help them understand what’s actually happening inside the human brain under pressure—first step toward doing something about it.

“You are high-performing teams making important decisions—but you are still governed by your biology,” said DeNicola. “Understanding that, and taking steps to account for it, is how you ultimately make great decisions.”

At the core of the issue, there’s a hardware problem, said DeNicola. Evolutionary biologist E.O. Wilson framed it this way, he said: we have paleolithic emotions, medieval institutions and godlike technology. The combination is inherently problematic. “Our brains evolved for survival on the Serengeti, survival in small groups to be able to respond to threats, to be able to assess risk, and to be able to take social cues,” he said. “It was not made for 500 page board decks. It was not made for stakeholder pressure.”

The result is predictable: more pressure produces more bias. Information overload slows decision-making and increases error. The non-hierarchical structure of a board creates social dynamics that discourage dissent. And outside scrutiny pushes toward speed at the expense of accuracy.

Three forces shaping board decisions

Drawing on neuroscience research from Wharton’s Michael Platt, Smilowitz and DeNicola organized their findings around three mechanisms that drive how boards actually decide.

1. Attention is a scarce and contagious resource. The brain is constantly filtering—deciding, mostly beneath conscious awareness, what to focus on. Whatever is most visible in a given moment tends to dominate. In a boardroom, that means whoever speaks first, or whatever metric appears on the first slide, effectively sets the agenda for what everyone thinks about. “Attention is contagious,” Smilowitz noted. “If you have one dominant person in the room or one salient metric on page one, that’s what everyone’s attention will follow.” That’s not a character flaw—it’s neuroscience.
2. Too much information degrades decisions. Paradoxically, more information makes decisions harder, not easier. When options multiply, the brain’s ability to accumulate evidence toward a clear choice diminishes. Under cognitive overload, people resort to shortcuts: anchoring on the first number they saw, defaulting to whoever had the best recent performance review or simply choosing what feels least wrong. “The quality of those decisions deteriorates,” Smilowitz said. “Instead of managing strategic trade-offs, the brain is just trying to process information.”
3. The social brain is always running. The moment you walk into a room, your brain starts scanning—assessing who has authority, whether consensus is forming, whether it’s safe to disagree. This is biological, not political. Because our brains evolved for group survival, isolation from the group reads as threat. The practical result in a boardroom: When a high-status director speaks first and reaches a conclusion, the neurological pressure on everyone else in the room is to align, not challenge. The uncomfortable implication, DeNicola noted, is that “very few boards want disagreements in their minutes”—but consensus-driven decision-making under these conditions can systematically suppress the most important perspectives in the room.

There is a counterforce, though. When boards build genuine trust, something called synchrony emerges—brainwaves, blood pressure and vital signs of group members literally begin to align. Teams in synchrony make measurably better collective decisions. The risk is tipping too far: synchrony that becomes groupthink.

To do better, they offered three practical moves. The research distills to three interventions any board can implement to make better decisions. Thankfully, none of them are difficult or costly:

1. The power of pause. Under pressure, the brain craves action. Boardroom rituals—motions, seconds, votes—are designed for efficiency, not reflection. The fix is structural: build deliberate pauses into agendas before major decisions. Even two to three minutes to ask “are we asking the right questions?” and “what would change our minds?” turns off autopilot and measurably improves judgment.
2. The power of focus. Boards should work with management to restructure materials so that the most critical information and trade-offs appear first—not buried on page 145. Agenda design matters too: Don’t schedule consequential decisions at 4:30 p.m. when everyone is tired and hungry. “Are you making decisions at the end of the day when everybody’s ready to catch a plane,” Smilowitz asked, “or at the beginning of the day when mental energy is at peak?”
3. The power of empathy. Not empathy as agreeableness—empathy as intentional perspective-taking. The question isn’t whether you understand the people in the room. It’s whether you’re actively considering who isn’t represented: which stakeholders, which viewpoints, which risks are being underweighted because no one at the table holds them. Practical tactics include rotating speaking order, formally naming a devil’s advocate and recruiting for demonstrated capacity to take perspectives different from your own.

“The moment you genuinely change your mind,” DeNicola said, “your empathy expands—you become less defensive, and you make better decisions