Personality Predicts Behaviour. Culture Predicts Interpretation.

Some years ago I was on a workshop in Bangkok with about thirty people in the room. Part of the exercise involved being matched with the person whose personality profile most closely resembled your own.

I was put with a young Thai woman. What struck me was not that we got along, which would not have been remarkable. It was that we understood each other immediately. We used the same language for things. We looked at problems the same way. We arrived at decisions by the same route.

Across the room sat an Australian, from my own country, with a completely different profile from mine. We had far less in common than the Thai colleague and I did, and it was not close.

That afternoon rearranged something I had assumed without examining it.

A population is not a person

Cultural knowledge is a set of generalisations. That is not a criticism. Generalisations are useful, they are often accurate, and a leader arriving in an unfamiliar market would be foolish to ignore them.

But a generalisation describes a population. It does not describe the person sitting opposite you, and the gap between those two things is where most of the trouble starts. Cultural statements can be true on average and still tell you almost nothing reliable about any particular individual. The Vietnamese finance director and the German finance director who share a personality profile will recognise each other faster than either will recognise a compatriot with an opposite one.

Alongside that, the two explanations answer different questions. Personality is the better predictor of what somebody will actually do. Culture is the better predictor of how what they do will be read by the people around them.

The example I meet most often

A company tells me they want somebody to be more outspoken: share more ideas, speak up in meetings, contribute in front of the regional team.

There is a ready-made cultural explanation available and people reach for it constantly. He is Vietnamese, and in this culture people do not challenge senior colleagues in open forum. That explanation sounds informed, it is not entirely wrong as a generalisation, and it leads almost nowhere.

Then I meet the person, and quite often what I am looking at is somebody who is deeply introverted. That pattern is well set. It is not a performance, and it will not shift because a regional director would prefer it. They can do outspoken, but in short bursts, and afterwards they need to stop.

So the conversation becomes a different one. I am not trying to change who you are. I want to change your behaviour for the twenty minutes where it matters, and then you can go back to being yourself.

Notice what the two explanations produce. The cultural one gives you an accurate-sounding account of the room and nothing to do about it. The personality one gives you a specific, achievable request and a reason the person can accept.

Which explanation gives you something to pull on

That is the real reason I work from personality rather than culture, and it has nothing to do with which force is stronger in the abstract.

When I am working with somebody, the question I am actually asking is which explanation gives me something to pull on.

Culture, as an explanation, is largely inert. Even where it is accurate it hands you nothing you can use with the individual in front of you. You cannot coach somebody out of their culture, and you should not be trying.

Personality gives me a deeper insight into the person: how they think, how they behave, how they arrive at decisions. Once I understand that, I know which levers to pull. I know what is well set and slow to move, and what is genuinely available now. Those two require completely different conversations, and confusing them wastes months on both sides.

A generalisation is not a lever.

Personality is not fixed either

There is a further point here, and it is where I part company with a good deal of the thinking I was trained in.

Western thinking treats personality as essentially fixed. You have a set of traits, they are stable, and the most that changes is how much you flex them to suit a situation. Underneath that is an assumption that there is a settled thing called your personality, and circumstances only affect its presentation.

The Eastern view is different, and it is the one I have come to hold. Personality is not fixed. It is shaped by environment and by relationship, and it moves as those move. The same person genuinely is different in a different setting, not because they are performing, but because who they are in that setting has changed.

I am aware that describing an Eastern and a Western view is itself a cultural generalisation, inside an essay arguing against leaning on those. The difference is that I am describing two traditions of thinking about people, not predicting what the person across the table is going to do. That is the line, and it is worth keeping in sight.

This matters more than it looks, because it explains why personality gives you anything to work with at all. If personality were genuinely fixed, coaching would be confined to helping people become more comfortable with what they already are. It is not confined to that. Change the environment somebody is operating in, change the relationships around them, change what the role actually asks of them, and you have altered the conditions in which they develop.

I want to be careful here, because it would be easy to swap one oversimplification for another. Saying that culture explains people is wrong. Saying that environment explains people is equally wrong, and it is the more tempting mistake for anyone who has just watched somebody come alive in a new role.

Environment shapes behaviour. Relationships influence how a person develops. Neither of them does the developing. People choose what to take from a setting and what to refuse, they seek out some environments and steer away from others, and two people put into the same role will make quite different things of it. That is agency, and it does not disappear because the context is strong.

What actually happens is slower and more reciprocal than either account suggests. Somebody brings their dispositions into a setting. The setting makes certain behaviours easy and others expensive. The person responds: adapts, resists, or digs in. That response changes how the setting treats them next time. Repeat that a few thousand times across several years and something has genuinely shifted, but it was not done to them and they did not do it on their own.

None of that is fixed, which is why I treat a personality assessment as a snapshot rather than a verdict. Run it again in five years, after a different job and a different set of people, and it will often read differently. That gets described as the instrument being unreliable. My reading is that the instrument is fine and the assumption behind it is wrong.

So the two timescales need holding apart. In a meeting next Tuesday, an introvert is an introvert and you should design around that. Over three years in a different environment, with different people and a different set of demands, that same person may be someone else. Coaching works on the first of those. Careers are made and unmade by the second.

Why the cheaper explanation wins

Knowing all this does not stop experienced leaders reaching for culture first, and it is worth being honest about why.

Culture is available before you meet anybody. You can read about it on the flight. It requires no relationship, no time and no particular attention to this specific person.

It is also socially safer. Attributing a difficulty to somebody's culture sounds observant. Attributing it to their personality sounds like a judgement about them, and attributing it to the relationship sounds like a judgement about yourself.

And it is nearly impossible to disprove after the event. Any behaviour can be fitted to a cultural explanation once it has already happened, which makes the explanation feel powerful while predicting nothing.

Personality costs more. It can only be learned from the person, over time, by paying attention and by asking. That is precisely why it is underused, and precisely why it is worth more.

What twenty years in a market is actually worth

This is the fair challenge. If personality is where the levers are, what is the value of long experience in a particular region?

Culture explains the terrain rather than the person.

It tells you what will be said in the room and what will be said afterwards in the corridor. It tells you how a decision actually travels once it leaves the meeting, and who has to be consulted before it can move even though they do not appear on the chart. It tells you the cost of a particular mistake. In some organisations disagreeing with your boss in front of others is unremarkable. In others it is career-limiting, and nobody will tell you that until after you have done it.

The clearest example here is the relationship between a title and a person's sense of who they are. With a title comes influence, position, and standing that extends well outside the office. Take a title away in a restructure or a sideways move and the damage is not mainly financial. Miss that and you will read a leader's resistance to a reorganisation as obstruction when it is something much closer to grief.

There is one more reason the terrain matters, and it follows from everything above. If environment shapes behaviour and relationships influence development, then the culture of an organisation is not merely the backdrop. It is one half of the interaction. A leader who changes the environment has changed the conditions under which everybody in it develops, whether or not that was the intention. What each of them makes of those conditions is still their own.

So the map is worth a great deal. What it will not do is tell you who is walking across it today.

How I try to hold both

In practice this means I do not rely on a single input when I am working out what is going on with somebody.

I use personality assessment, because if I am trying to shift a behaviour I need to know what is well set and what is available. I also want to know how other people see the person, so I talk to as many of them as I can: the general manager, human resources, peers. And I want to know how the person sees themselves, because the gap between those two views is usually where the real work sits.

Nationality is somewhere in that picture. It is rarely the thing that explains the behaviour I have been asked about.

What this asks of a leader

If you run a business across several markets, the implication is uncomfortable, because it removes a shortcut.

Read the cultural map. It is genuinely useful and it will keep you out of avoidable trouble. Then put it down, because it has told you everything it can about the situation and nothing about the person you are meeting tomorrow.

The only route to that is the slow one. Find out what motivates this particular individual by asking them rather than inferring it from their passport or their generation. Work out what is well set and what is available to move. Notice how they arrive at decisions, and adjust your own approach to meet it.

And keep in mind that the answer has a shelf life. The person you worked out two years ago has been in a different environment since, with different people around them, and some of what you concluded has expired.

That takes longer than reading a country guide. It is also the part that gives you something to pull on.