Insights

Why promotions work — the behavioural case

Great promotions aren't loud discounts. They are behaviour-change instruments, engineered around the way people actually decide.

Most purchases are habitual. Customers repeat what they bought last time because deciding costs energy and repeating doesn't.

A promotion has to be strong enough to interrupt that default. That's why headline mega-prizes outperform another 10% off — the promise is memorable, the cost of ignoring it feels real.

The mechanic is the exchange rate: what behaviour do we want, and what is the smallest reward that reliably triggers it? Everything else is scaffolding.

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