The research behind it — Behavioral Friction Theory

Action is a race, not a choice

The basic idea: in any given moment several possible actions compete to be carried out. The one that crosses the threshold first becomes behaviour.

Friction is the resistance an action meets on the way — and it decides which route wins.

That changes what you can do about it. If behaviour were a choice, more information and better arguments would work.

When behaviour is a race, what works instead is removing resistance from the route you want — or adding resistance to the one you do not.

The four fields

Friction is not one thing. It comes from four different places, and each calls for a different response.

Two of them are about value — is it safe, and is it worth doing. Two are about capacity — can I, and what does it cost.

Value field

Safety

Tryghed

Is this dangerous for me? Risk, unease, something that could go wrong — socially too.

Value field

Meaning

Mening

Is it worth doing? Purpose, direction, does it make me the person I want to be.

Capacity field

Ability

Kunnen

Can I do this? Skill measured against what the task demands — and the belief that it can succeed.

Capacity field

Effort

Indsats

What does it cost? Bother, number of steps, energy — the plain cost of doing it.

“Do they dare? Can they see the point of it? Can they do it? Is it worth the bother?”

Four questions in the fields’ own order — and four completely different responses, depending on where the answer is no.

The order matters. Safety weighs heaviest and is settled first — while it is under pressure, you do not get on to the others.

Effort weighs lightest, and that is exactly why process design alone fails when a deeper field is over the threshold: you make it easier to do something people still do not dare to do, or cannot see the point of.

The friction matrix: where the resistance becomes visible

The four fields are crossed with five layers — how deep in the system the resistance registers. That gives a map of how the same kind of friction looks different depending on how deep it strikes.

The same person can meet safety friction in the body under pressure, and in the mind when things are calm.

See the whole matrix — five layers × four fields

The friction matrix: five layers crossed with four fields
Layer \ Field	Safety	Meaning	Ability	Effort
Biological	Alarm, freeze, high arousal	Flatness, restlessness	Exhaustion	Overload
Emotional	Anxiety, vigilance	Engagement / emptiness	Doubt	Reluctance
Inner	Self-protection, dignity threatened	Identity, shame, where do I belong	Belief in one’s own capacity / giving up	Inner resistance
Cognitive	Risk assessment	Explanation, direction	Planning	Complexity
Outer	An unsafe culture	Absence of purpose	Lack of support or access	Badly designed systems

The cells describe patterns, not personality types. They show where the friction usually becomes visible. Source: Behavioral Friction Theory §3.2.

The inverted U: why both too little and too much are bad

The ability field: skill matched against demands

The ability field is a match: skill held up against what the task demands. If the demands sit far above, it is experienced as overload.

If they sit far below, engagement falls. In between lies what Csikszentmihalyi called flow. That is why the curve is an inverted U — both too little and too much cost something.

It is the best evidenced of the four fields. Brain imaging has shown boredom, flow and overload as three distinct states in the same experiment, and learning research finds the same pattern.

It holds for rule-following too. Too many competing rules make adherence fall. When we gave a language model 56 rules at once, it followed on average only a third of the rules that applied.

It is a single measurement on our own service, but it points the same way as the research on information overload.

Read the research

This is the short version. The full one — papers, data and method — is freely available.

frictiontheory.org — the papers and the underlying data →

A book is also on the way, written to be read without technical language. The first chapter, Kapløbet i dit hoved, is freely available — read it here (in Danish).