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Behaviour

Friction is a tool and most of it points the wrong way

Investment platforms remove friction from every action equally, which makes selling as effortless as contributing, when the two decisions deserve very different amounts of resistance.

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Effort determines behaviour more reliably than intention does. Investment platforms have removed effort from every action at once, and the actions did not need it removed equally.

Friction changes what gets done

Small obstacles suppress behaviour far more than their size suggests. An extra step, a second login or a form deters a meaningful share of people from completing an action they intended.

This is well understood by anyone designing a purchase flow. Removing steps raises completion, which is why commercial pressure runs consistently towards fewer of them.

Applied to investing, the same force operates on every button. Contributing, switching, selling and checking have all become equally frictionless, because friction was treated as a defect in general.

The two decisions are not symmetrical

Contributing on schedule and selling during a fall are not the same kind of decision. One is executing a plan; the other is departing from it under emotional pressure.

Departures from a plan are exactly where a delay is most valuable. The impulse that drives them is short-lived, and an obstacle that outlasts the impulse prevents the action.

Platforms cannot distinguish the two, and have no commercial reason to. Activity is generally the thing being optimised for, and a hesitant customer is not a design goal.

Reinstating friction deliberately

Friction can be added back by the individual, because it does not have to be technical. A rule requiring a written reason before any sale imposes a delay the platform does not.

Removing the app from a phone and using a browser instead produces a similar effect. The account remains fully available, but the action requires an intention rather than an idle moment.

Some providers also offer a mandatory cooling period or a two-step confirmation on certain transactions. Where those exist, they can be enabled once and then left alone.

Friction should not be added to contributions

The same logic runs in reverse for actions you want to happen. A contribution requiring a monthly decision will happen less often than one requiring nothing at all.

This is why the automatic transfer and the deliberate obstacle belong together. One removes effort from the behaviour that should be automatic; the other restores it where judgement is needed.

Platforms that make everything equally easy leave that asymmetry to the customer. Nobody sets it up by accident, and the default is uniform ease in both directions.

Notifications are friction working backwards

Alerts about market movements do not add effort; they subtract the effort of remembering to look. Each one is an invitation to consider an action that was not otherwise being considered.

The effect compounds because notifications cluster during volatility. The prompts arrive most heavily in the period when a hasty decision is most likely and most expensive.

Switching them off is the cheapest available intervention. It costs nothing, removes no capability, and reduces the number of moments in which a plan has to be actively defended.

Questions readers ask

Does the witness need to understand investing?

No. Their job is to remember what you said and ask about it. Someone with strong opinions about holdings is usually a worse choice than someone with none.

What if my plan genuinely needs changing?

Then change it through the procedure you wrote down, which normally means a delay and a written reason. The point is to filter impulses, not to freeze the plan.

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Bethan Rees
Contributing writer, The Investment Habit

Bethan writes about drawdown and turning a portfolio back into an income.

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