When a small business owner says “I have an open door policy,” they usually mean it. They genuinely believe they want their team to bring problems to them. They’ve said it out loud. They might even have it written somewhere.
That’s the espoused theory.
Then their best employee resigns and gives a polite reason for leaving. A week later the owner hears, indirectly, that there had been an issue with how a recent decision was made — something nobody had mentioned to them. The owner is confused. Why didn’t anyone say anything? The door was open.
That’s the theory-in-use revealing itself. And the gap between the two is one of the most important things in organisational life.
The distinction, in one sentence
Your espoused theory is what you say you believe about how to behave. Your theory-in-use is what your behaviour actually shows you believe.
The two are rarely the same. That isn’t a character flaw. It’s a feature of being human. The American organisational theorist Chris Argyris spent most of his career documenting how reliably the two come apart — in executives, in researchers, in himself — and how rarely the people involved can see it.
Why this matters for a workplace
When the gap is small, people can trust what they’re told. The owner says “tell me if something isn’t working” and when something isn’t working, people tell them. The team learns that espoused theory and theory-in-use match, and the workplace runs on words.
When the gap is large, words stop being trustworthy. The owner still says “tell me if something isn’t working” — but the team has learned that doing so produces consequences they don’t want. So they stop. Not because the owner is a bad person. Because the team has learned, from watching, what the owner actually values when it counts.
Once that happens, the workplace runs on something other than words. Usually rumour, body language, and quiet conversations that the owner is not part of.
A small example
A founder tells their team that quality matters more than speed. They mean it.
Then a deadline comes in tight. The founder, under pressure, asks the team to ship something that isn’t quite ready. The team does. Nothing terrible happens. The deadline gets met.
The founder has just taught the team something different from what they said. Not by lying. By behaving. Next time quality and speed conflict, the team will remember what happened, not what was said.
This is theory-in-use at work. And it gets stronger every time it gets reinforced. Three or four episodes like this and the team knows, even though no one has said it out loud, that quality only matters when speed isn’t on the line.
Why people can’t see their own theory-in-use
If you ask someone to describe their values, they’ll describe their espoused theory. They genuinely don’t have direct access to their theory-in-use — because theory-in-use is what shows up in behaviour under pressure, and most people don’t watch their own behaviour under pressure the way they’d need to in order to see it.
The only reliable way to see your theory-in-use is to ask someone who’s been watching it — usually a colleague, a partner, or a coach. And to be willing to hear an answer that may not match the story you tell about yourself.
This is uncomfortable. Argyris’s central observation was that even people who study this for a living can’t reliably see their own theory-in-use without help.
What to do with this
A few practical things.
When you make a decision that seems to contradict what you’ve said you value, don’t gloss over it. Say so. “I know I said quality matters more than speed — what I just did sent the opposite signal. Here’s why I did it. Here’s what I’d do differently next time.” The damage of the original action is real. The damage of pretending it didn’t happen is bigger.
Notice when your team’s behaviour doesn’t match what you’ve told them. If you’ve said “speak up” and they aren’t speaking up, the question isn’t why they’re broken. The question is what your theory-in-use has been teaching them.
Watch what you measure, reward, and tolerate. These three things define your theory-in-use more accurately than any values statement. People aren’t watching what you say. They’re watching what you do when it costs you something.
Where this fits in the bigger picture
Theory-in-use and espoused theory are part of a larger framework Argyris developed for understanding how organisations learn — or fail to. The same author identified two specific patterns of behaviour, Model I and Model II, that describe how most people actually behave under pressure versus how they’d behave if their espoused theory were really running the show.
Closely related is the concept of defensive routines — the automatic patterns people use to protect themselves from learning that their theory-in-use isn’t what they thought it was.
And the broader question — how a team learns versus how it just repeats — is the territory of single-loop and double-loop learning.
Sources
This concept comes from the work of Chris Argyris and Donald Schön, particularly their 1974 book Theory in Practiceand Argyris’s later work on organisational learning.