LEADERSHIP INSIGHTS · The ACP Group High-performance leadership is built from the inside out.
In this edition: what the research on threat, emotion, and stress actually says about why capable teams falter when conditions get hard — and what the leaders who hold them together do differently.
A project slips. A major client cools. A senior person leaves at the worst possible time. You'll read these as operational problems, and you'll be right. But watch what happens in the days that follow, and you'll notice something the project plan never accounts for: the team starts behaving differently. Meetings get more cautious. People stop volunteering bad news. Good ideas show up pre-hedged, if they show up at all.
The work didn't just get harder. The people doing it changed.
This is the half of leadership that no one assigns you and everyone feels. Every operational problem carries a second problem inside it — not the slipped deadline itself, but what pressure does to the minds responsible for recovering it. And decades of work in organizational and performance psychology now describe that second problem with uncomfortable precision.
In 1981, organizational researchers Barry Staw, Lance Sandelands, and Jane Dutton identified a pattern that holds at every level of a human system, from a single person to an entire company. They called it the threat-rigidity effect. Under perceived threat, people and organizations reliably do two things: they restrict the information they take in, and they tighten control. Attention narrows. Decision-making centralizes. Groups fall back on familiar, well-learned responses — even when the situation is new and those responses no longer fit.
It is one of the most replicated findings in the field, and it explains a mistake that competent organizations make constantly. When a project goes sideways, the instinct is to add control: more meetings, more reporting, tighter oversight, a new dashboard. It feels like leadership. But the research suggests it is often the threat response itself, wearing the costume of management. Tightening control narrows the channel at precisely the moment the team needs it wider — to surface dissent, flag risk early, and think laterally about a problem that the old playbook didn't anticipate.
So the organization treats a psychological problem with an operational tool, and is then surprised when the tool makes everything slower and more brittle.
The teams that adapt under pressure are rarely the ones with more process. They are the ones whose leaders keep the channel open when every instinct in the building says to clamp it shut.
If the team's state is the hidden variable in performance, the next question is what moves it. A large body of research points, inconveniently, at the person in charge.
In a set of landmark studies published in 2002, Sigal Barsade documented what she named the ripple effect: emotions transfer measurably between people in a group, shaping cooperation, conflict, and even how capable members believe they are. People catch one another's affect — and negative states tend to travel faster and lodge harder than positive ones. In any group, the person with the most authority is the strongest emitter. Long before a team does what a leader says, it absorbs how the leader is.
This is why composure is not a personality trait or a nicety. It is an input to group performance. It also governs the condition Amy Edmondson has spent her career mapping — psychological safety, the shared belief that it is safe to speak up, raise a problem, or take a smart risk without being punished for it. Under threat, that belief is the first casualty, and it collapses fastest when the most senior person in the room signals that bad news is dangerous to deliver. The leader rarely has to say so. The team reads it off them.
None of this is an argument for performing a calm you don't feel. Contagion works on the real signal, not the announced one; manufactured composure leaks, and people trust it less than honest concern. The point is narrower and more demanding: your internal state is not private. It is information the entire system is already using.
Here is where the research turns unexpectedly hopeful. The leaders who stay clear under load are not unusually calm people. They have learned to do something specific with stress — and it is trainable.
The most robust evidence comes from work by Jeremy Jamieson, Wendy Berry Mendes, Alia Crum, and others on stress reappraisal. The body's stress response — the racing heart, the tunnel focus, the surge of arousal — is largely fixed. What is not fixed is how you interpret it. When people are taught to read those signals as a body mobilizing resources to meet a demand, rather than as evidence that something is wrong, their performance improves: sharper cognition, healthier cardiovascular responses, less fixation on the threat. The arousal doesn't change. The appraisal does. The appraisal is the lever.
And appraisal, like emotion, is contagious. A leader who frames a setback as a threat to be survived cues the whole group into a threat state — and straight into the rigidity Staw described. A leader who frames the same setback as a hard but solvable problem cues a challenge state, in which people keep thinking, keep talking, and keep taking the intelligent risks that recovery actually requires.
In practice, the leaders who do this well tend to do a few unglamorous things consistently:
It's tempting to file all of this under "soft skills," the human garnish on the real work of strategy and execution. The research points the other way. Performance under pressure is not only a function of the plan. It is a function of the psychological conditions under which the plan gets executed — and those conditions are set, upstream, by the internal state of the person leading.
That is what built from the inside out actually means. Not a slogan about resilience, but a precise causal chain: a leader's own appraisal shapes their visible state; that state propagates through the team; the team's state determines whether it widens or narrows at the moment that decides everything. You cannot fake your way down that chain, because contagion catches the truth. But you can train the first link in it.
The leaders who navigate the hardest conditions are seldom the ones who wait for the pressure to lift. They are the ones who have learned to stay clear enough, long enough, to keep the people around them thinking. That capacity isn't a temperament you're issued at birth. It's a skill — and it's the one worth building before any other.
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