The experiment that started with a lunch menu

In 2009, researchers Sybil Yang, Sheryl Kimes, and Mauro Sessarego ran a controlled field experiment at the Culinary Institute of America’s St. Andrew’s Café in Hyde Park, New York. Lunch guests were randomly assigned one of three menus: one showing prices in standard dollar format ($20.00), one showing just numerals with no currency symbol (20), and one with prices written out in words (twenty dollars). Using a statistically significant sample of 201 dining parties, they found that guests given the numeral-only menu spent 8.15% more on average than those given either of the other two formats.

The secondary finding was equally important: there was no statistically significant difference in spending between the dollar sign format and the written-out format. Both produced the same lower spending. The critical variable was not the format of the numeral — it was the presence of any explicit money reference at all.

The pain of paying

Drazen Prelec and Duncan Simester’s research on the pain of paying established that spending money is not a psychologically neutral act. Paying generates a genuine psychological cost that competes with the pleasure of acquisition — a discomfort that is not proportional to objective financial harm but is produced by any salient reminder that a financial transaction is occurring. Credit cards reduce spending pain by separating the moment of enjoyment from the moment of payment. Cash amplifies it by making the transaction physically concrete. Currency symbols on menus produce the same activation — they are unintentional primes that automatically shift the cognitive frame from pleasure to cost.

When a diner sees $18 on a menu, the dollar sign activates the financial transaction schema before they finish reading the numeral. The frame has switched from selecting food I want to deciding whether this food is worth this financial outlay. When they see 18, no schema switch occurs. The numeral sits within the sensory pleasure frame established by the food descriptions, and cost-benefit calculation is not automatically triggered. The number 18 sits quietly after a description and feels more like a label than a price.

Writing out prices in full — twenty dollars instead of $20 — produced the same spending-reduction effect as the dollar sign, because the written form still primes the brain for the discomfort of paying. What matters is not the format of the numeral but the presence of any explicit money reference that activates the payment schema.

The coupling and decoupling model

Prelec and Loewenstein’s coupling model provides the theoretical architecture for why the mechanism operates. Spending and consumption are psychologically coupled when the financial transaction is salient and decoupled when it is not. Coupling is painful: it makes the enjoyment of the consumption experience contingent on cost evaluation, reducing hedonic pleasure. Decoupling is pleasurable: it allows the experience to be enjoyed in a pure hedonic frame without the competing pain of financial loss.

The currency symbol is a coupling device. It keeps the financial transaction salient throughout the decision, ensuring that cost evaluation and pleasure anticipation compete for cognitive resources at every menu item. Removing it decouples the decision from the transaction — the diner is selecting experiences rather than making purchases, a framing shift that allows higher-cost options to be evaluated on their hedonic merits rather than their financial burden.

This is why the effect is particularly strong in experiential consumption contexts: restaurants, spas, tourism services, and luxury retail — all environments where emotional and experiential factors dominate and where the financial transaction is an intrusion on the hedonic frame rather than a natural part of the decision.

The commercial arithmetic

On a restaurant averaging £50 per cover and 200 covers per day, an 8% increase in average spend represents approximately £800 per day. Over a year, that approaches £290,000 from a typographical change that costs nothing beyond a menu reprint. The Cornell researchers described this as low-hanging fruit — a characterisation that understates its significance at operational scale.

For entrepreneurs beyond the restaurant industry, the implication extends to any pricing presentation context where the payment transaction can be decoupled from the consumption decision. Subscription confirmation pages, service agreement formats, e-commerce checkout flows, premium service pricing pages — wherever a currency symbol is currently displayed prominently at a high-friction decision point, the Yang et al. finding predicts that its removal or visual de-emphasis would reduce activation of the payment schema and increase conversion or spend.

The fine dining convergent validation

Fine dining establishments independently discovered this mechanism before the Cornell research formalised it. High-end restaurants routinely eschew currency symbols and round numbers, presenting clean numerals in formats that reinforce the experiential rather than transactional register. This convergent independent adoption by commercially competitive operators is itself evidence that the effect is real — restaurant operators who discovered through experience that symbol removal changed spending behaviour, without academic guidance, arrived at the same conclusion that controlled research later confirmed.

The symbol’s absence in fine dining also functions as a quality signal in its own right. A menu without currency symbols communicates that the establishment operates in an experiential frame — a contextual cue that primes the diner for the evaluative mode in which premium prices feel appropriate. The removal is simultaneously a pain-of-paying reduction and a prestige positioning signal.

The payment technology parallel

Currency symbol removal on menus is the decision-point expression of a broader decoupling mechanism that operates across payment technologies. Contactless payment produces higher average transactions than chip-and-pin; chip-and-pin produces higher average transactions than cash. Each technological step that increases distance between the consumer and the physical handling of money reduces pain-of-paying activation. A restaurant that removes currency symbols from its menu and accepts contactless payment has deployed decoupling at both decision and transaction stages — the two mechanisms compound rather than substitute.

If the spending psychology described in this article connects to patterns in your own behaviour that are significantly affecting your financial wellbeing, that is worth acknowledging. UK: Samaritans (116 123, free, 24/7). Mind (0300 123 3393). International: iasp.info/resources/Crisis_Centres.

A book worth reading alongside this

Dollars and Sense by Dan Ariely and Jeff Kreisler is the most accessible available treatment of why currency representations are never neutral — why the pain of paying varies with how visible the transaction is made, and how different pricing presentations modulate the intensity of that pain. Ariely’s treatment of the mechanisms by which restaurants, subscription services, and luxury retailers systematically reduce the visibility of the payment act — and why this works despite consumers being intellectually aware of it — is the most readable available account of the mechanisms this article documents. For any entrepreneur making decisions about how to present prices across any medium, it is the most directly relevant starting point available.

Have questions about this article?

If any part of this article raised questions you want to explore further, courbot.co is built for exactly that. It is courben.co’s AI assistant, designed around the psychology of entrepreneurship. Ask it anything from this article.

If financial pressures or spending patterns described in this article are significantly affecting your wellbeing, speaking with a psychologist is the right next step. UK: Samaritans (116 123, free, 24/7). Mind (0300 123 3393). BACP therapist finder: bacp.co.uk/search/Therapists. International: iasp.info/resources/Crisis_Centres. Crisis Text Line — text HOME to 741741.

This article is for educational and informational purposes only. Sources: Yang, S., Kimes, S.E. & Sessarego, M.M. (2009), Cornell Hospitality Report, Vol. 9, No. 8. Prelec, D. & Simester, D. (2001), Marketing Letters, 12(1), 5–12. Prelec, D. & Loewenstein, G. (1998), Marketing Science, 17(1), 4–28.