The Yerkes Dodson law says that performance rises with pressure, or arousal, up to a point, and then falls once pressure goes past that point. Drawn as a graph, it’s the famous inverted U, and it explains why the same person can be brilliant under a tight deadline one week and freeze in a big presentation the next.
For leaders, this isn’t just a psychology exam topic. In a service business your people are what you sell, so how they perform under pressure shows up directly in client outcomes, pitches won and work delivered on time. Push people too little and they coast. Push them too hard and the best ones can choke, often at the exact moment it matters most.
This guide explains the Yerkes Dodson law and the inverted U theory in plain English, where the model falls short, what catastrophe theory adds, a workplace example, and how to help each person find their own performance zone.
Table of Contents
What is the Yerkes Dodson law?
The Yerkes Dodson law comes from a 1908 study by psychologists Robert Yerkes and John Dodson, published as “The relation of strength of stimulus to rapidity of habit-formation”. They found that mice learned a task faster as the strength of a mild electric shock increased, but only up to a point. Beyond it, stronger stimulation made learning worse, and the tipping point came sooner when the task was harder.
Later researchers turned that finding into the general principle we use today: a moderate level of arousal (alertness, energy, pressure) produces the best performance, while too little or too much makes performance worse. Two refinements matter at work:
- Simple or well-practised tasks tolerate a lot of pressure. People often do routine work faster when there’s a deadline.
- Complex or new tasks suffer sooner. Problem-solving, creative work and judgement calls need a calmer state.
The inverted U theory, explained
The inverted U theory is the picture of the Yerkes Dodson curve. Put arousal along the bottom and performance up the side, and you get a hill. On the left, people are under-stimulated: bored, distracted and slow. At the top, they’re alert and focused. On the right, they’re over-stimulated: anxious, scattered and making mistakes.
Arousal here means more than nerves. It covers physical activation (heart rate, energy) and mental pressure (worry about the outcome, who’s watching, what’s at stake). A deadline, a demanding client, a room full of senior people and a lack of sleep all push someone further to the right.
Where the inverted U falls short: catastrophe theory
As David Fribbins, Wotter’s COO, explained on our podcast, the inverted U is about 80 per cent right. The bit it gets wrong is the right-hand side. The curve suggests that once people pass their peak, performance drops gently. In real life it often doesn’t. It collapses.
Sports psychologists describe this with catastrophe theory, which says that when physical arousal is high and anxiety climbs past a threshold, performance falls off a cliff (sometimes called the catastrophe cusp) rather than sliding down a slope. Easing the pressure a little doesn’t bring it back. The person needs a full reset.
Rory McIlroy at the 2011 Masters is the textbook example. He went into the final round with a four-shot lead and shot 80. Two months later he won the US Open, which shows the collapse was about the moment, not his ability. Most of us have seen a smaller version at work: the expert who knows their material cold and then freezes in front of the board.
A workplace example of the Yerkes Dodson law
Picture two consultants preparing the same client pitch. One does their best work at the last minute: give them a week and they’ll start on day six, then produce something sharp. The other needs time and quiet, and a late change of brief throws them completely.
Neither is better. They simply sit at different points on the curve. The first performs best at high arousal, like someone who does well in exams. The second performs best at lower arousal, like someone who prefers coursework. The mistake leaders make is assuming everyone works like they do, so they either add pressure to people who are already near the edge or remove it from people who need it to focus.
The pressure you can’t see matters too. Workload, money worries and problems at home all add arousal before the working day starts. Our guide to managing staff workloads covers how to spot people who are already running hot.
IZOF: finding each person’s performance zone
The model that ties this together is the Individual Zone of Optimal Functioning (IZOF), developed by sports psychologist Yuri Hanin. It says that each person has their own zone of arousal and emotion in which they perform best. Some people’s zone is high and some is low. Performance improves when people learn where theirs is and how to get into it.
That changes the job of a manager. Instead of applying one level of pressure to the whole team, you help people understand their own zone, then shape the work and environment to fit. That might mean a quieter space for one person, a tighter interim deadline for another, and a proper rest after a big push for everyone, because nobody can stay at peak indefinitely. Psychometric testing can help people put words to their own zone, as long as it is used to shape the work rather than to label people.
How to use the Yerkes Dodson law at work
- Ask people where they do their best work. Exam or coursework? Stage or small group? Deadline rush or steady pace? Their answers tell you which side of the curve they prefer.
- Match the task to the person. Give urgent, high-stakes work to people who thrive on it, and long, complex work to people who need calm.
- Set deadlines that fit the work. A deadline shorter than the time a task really needs pushes people past their peak.
- Build in recovery. After a big pitch or project, give people time to reset. It protects the next performance.
- Watch for chronic overload. If people stay on the right of the curve for weeks, you get burnout, not high performance. Our burnout cost calculator shows what that can cost.
- Listen regularly. Short, anonymous check-ins show where pressure is building before it turns into mistakes or resignations. Wotter is one example of a tool that does this.
Exercise: the pen test
David uses a simple exercise to help people feel the Yerkes Dodson law for themselves. Ask your team three questions.
- Could you throw a pen in the air and catch it? Almost everyone says yes.
- Could you do it just as well in front of 50 colleagues?
- Could you do it in a stadium of 80,000 people, with something important riding on the catch?
The task never changes. Only the pressure, and your awareness of it, does. Ask each person where their confidence started to drop. It’s a quick, memorable way to start a conversation about how much pressure helps them and how much is too much.
Frequently asked questions
What is the Yerkes Dodson law in simple terms?
It says performance improves as pressure or arousal increases, but only up to a point. After that, more pressure makes performance worse.
What is the inverted U theory?
It is the graph of the Yerkes Dodson law. Performance rises with arousal to a peak and then falls, which makes an upside-down U shape.
What is catastrophe theory in sport and at work?
Catastrophe theory says that when anxiety gets too high, performance can collapse suddenly rather than decline gradually, and needs a full reset to recover. It refines the right-hand side of the inverted U.
Does the Yerkes Dodson law apply to everyone the same way?
No. Each person’s peak sits at a different level of pressure, which is the idea behind the Individual Zone of Optimal Functioning. Task difficulty also matters, because complex tasks need lower arousal.
How can managers use the Yerkes Dodson law?
Learn where each person performs best, match tasks and deadlines to them, build in recovery after high-pressure periods and check in regularly so overload is spotted early.
Pressure is a tool, not a strategy
The Yerkes Dodson law is over a century old, but its lesson is still ignored in most workplaces: pressure helps up to a point and then it hurts, and that point is different for everyone. Treat pressure as something to tune person by person, not a lever you pull for the whole team, and your best people will choke less often.
For the full conversation with David Fribbins, listen to Episode 29 of Strategic HR Weekly.
