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Stores move things to wake your brain
How novelty works
The human brain is programmed to pay attention to new things and ignore old ones. The shops passed on a commute, the tools in the kitchen, and the old sneakers pulled on each day barely register. A new restaurant, an ad for a kitchen gizmo, or a snazzy pair of shoes gets noticed, and the brain fires off dopamine that pushes a person to explore it.
Rearranged aisles
Grocery stores make use of that. A shopper who has known a store's layout for years walks the aisles on robot mode, because everything is where it always was. Moving everything forces conscious shopping, and that is when new items get noticed.
Seasonal changes
The front of the store changes with new products, and the layout shifts with the season, so Halloween stuff comes out when Halloween season arrives. Labels get redesigned on products that have not changed at all, and the new look alone can pull a shopper in.
How does the brain tune out familiar things?
Neurons respond less each time they meet the same stimulus, an effect neuroscientists call repetition suppression. This saves energy, because the brain spends effort on what is unexpected. In a 2006 study in the journal Neuron, Nico Bunzeck and Emrah Düzel found that new images activated a midbrain region rich in dopamine neurons more than familiar ones did.
Why does something new trigger dopamine?
Dopamine neurons in the midbrain fire when something unexpected happens. In recordings from monkeys in the 1990s, the neuroscientist Wolfram Schultz found that these neurons fired when a reward arrived unannounced and went quiet when it was fully predicted. The signal acts as a flag for things worth learning about. Novelty carries that flag because nothing has predicted it yet.
Why does a changed layout break shopping habits?
Routine routes through familiar places run on procedural memory, which depends on the basal ganglia and takes little conscious effort. A moved shelf breaks that automatic pattern, so the eyes go back to scanning. Eye-tracking studies of shoppers have long shown that attention follows novelty and contrast on a shelf. Habit is also why people can walk a familiar route and recall almost nothing of it afterward.
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