Both Cups Held Coke. The Label Changed the Choice.

In a Baylor College of Medicine experiment, both cups contained Coke, yet participants preferred the cup identified as Coke over the identical unlabeled drink. The product had not changed; the memory attached to the brand had entered the experience itself. For marketers, the decision is no longer whether branding sits around the product, but whether repeated cues build meaning strong enough to influence the moment of choice.

The experiment separated liquid from memory

The 2004 Neuron study by Samuel McClure and colleagues involved 67 adults across four groups. Some completed anonymous taste tests between Coke and Pepsi. Others received semianonymous pairs in which both cups held the same cola, but one carried brand information and the other did not.

Without brand cues, preferences were broadly balanced. Participants’ stated allegiance to Coke or Pepsi also failed to predict their anonymous taste choices reliably. That gap matters: what people said about the brands and what they selected from unmarked cups were not the same thing.

Then the researchers made brand knowledge visible. In the Coke condition, every cup contained Coke, but participants showed a significant bias toward the cup labeled Coke. The label also produced a larger preference effect than the equivalent Pepsi cue. Nothing about the liquid improved. What changed was the information available before the sip.

Brand knowledge became part of the reward

The brain-imaging results help explain why. During anonymous delivery, activity in the ventromedial prefrontal cortex tracked sensory preference. When a Coke image announced the same Coke before delivery, the researchers observed additional activity in areas including the hippocampus and dorsolateral prefrontal cortex—regions associated with memory and the use of information to guide behavior.

The careful interpretation is not that a logo magically rewrote anyone’s taste buds. The study suggests that a familiar product experience is constructed from more than physical inputs. Sensation arrives alongside expectations, cultural associations and remembered encounters. The customer experiences the drink and everything the brand has taught them to anticipate from it.

That is why consistency can create commercial value without adding a new feature. Packaging, color, shape, tone, retail presentation and advertising can become retrieval cues. Used repeatedly, they help buyers recognize the offer and recover the meaning attached to it quickly. Used inconsistently, they force the business to rebuild recognition at every encounter.

The finding has a sharp boundary

The Pepsi cue did not produce the same significant behavioral or brain-response effect in this experiment. That asymmetry is essential. The research does not prove that any label can improve any product, or that stronger branding always defeats sensory quality. It shows what a culturally loaded cue did for one famous brand among a specific sample.

Brand meaning also cannot survive unlimited contradiction. If the advertised promise and the lived experience repeatedly diverge, recognition may retrieve disappointment rather than confidence. A distinctive package can make a weak product easier to identify; it cannot make the weakness harmless.

The common misuse is therefore cosmetic: redesign the logo, amplify the campaign and assume familiarity will manufacture value. The stronger application is cumulative. Choose cues that express a credible promise, repeat them across the buying journey and ensure the product keeps the memory honest.

Build memory that survives contact with the product

For a small business, the first task is not to imitate Coca-Cola’s scale. It is to make a few signals dependable: one recognizable visual system, one clear reason to choose and one customer experience that consistently supports it. A medium-sized company can test whether the same cues survive across locations, channels and creative partners instead of allowing every campaign to invent a new identity. A large company should protect distinctive assets while adapting execution, because reach compounds only when people can connect each exposure to the same brand memory.

This is where OrionPilot’s connected approach becomes relevant. Its published methodology links business context and strategy with creative production, execution, connected data, analytics and continuous learning. That structure can help a team keep the intended memory cue attached to the campaign, the customer experience and the evidence used to judge performance, rather than optimizing each asset in isolation.

The practical decision is not “brand or product.” The experiment shows why that split is artificial in the customer’s mind. Marketing works when recognizable meaning reaches the moment of use—and the product gives that meaning something true to remember.