How to Use Behavioral Economics in Marketing and Full Definition With Practical Examples
Quick Summary
Behavioral economics is the study of why people make economic decisions that deviate from classical rational models.
Human beings are not irrational; in fact, they are predictably irrational. The deviations from rational choice theory follow consistent patterns, which means they can be anticipated and designed for.
Six core concepts have the most direct application in marketing and brand strategy: prospect theory and loss aversion, nudge theory and choice architecture, mental accounting, the endowment effect, present bias, and status quo bias.
Losses feel roughly twice as painful as equivalent gains feel good. This single insight from prospect theory underpins free trials, sunk cost loyalty mechanics, risk-reduction framing, and churn reduction.
Choice architecture is already present in every brand touchpoint: in pricing structure, page defaults, option sequencing, and conversion flows. The question is whether it has been designed intentionally or created by accident.
For brands trying to acquire customers from competitors, rational value comparison is rarely sufficient. Status quo bias means switching costs are psychological as much as practical, and the marketing case must address both.
Brand strategy is, in large part, applied behavioural economics. A brand identity is a set of signals designed to activate specific psychological responses, and getting those signals right requires understanding the psychology behind the decisions you are trying to influence.
In the 1970s, a young psychologist named Daniel Kahneman was trying to understand why people made decisions that defied the predictions of classical economic theory. Together with his colleague Amos Tversky, he ran experiment after experiment proving that humans (surprisingly) are not the rational, utility-maximising agents that economic models assumed. Instead, people are predictably irrational.
A new field called behavioral economics was born from their work, and has completely reshaped how researchers think about decision-making, how policymakers design public interventions, and how marketers understand the buyers they are trying to reach.
This article explains what behavioral economics is, which of its core concepts matter most for marketing and brand strategy, and how you can use the academic research practically.
What is behavioral economics?
Behavioral economics (definition)
A field that combines insights from psychology and economics to explain why people make the economic choices they do. Unlike classical economics, which assumes fully rational decision-making, behavioral economics accounts for cognitive biases, heuristics, emotions, and social influences that shape real human choices.
Classical economics built its models on something called homo economicus — a hypothetical fully rational agent who makes optimal decisions with complete information and consistent preferences. However, behavioral economics's core finding is that real human beings deviate from this model in systematic, predictable ways.
None of those deviations are random errors, but in fact, they are patterns. And because they are patterns, they can be anticipated, designed for, and either worked with or worked against in marketing contexts.
Kahneman was awarded the Nobel Prize in Economics in 2002 for this work, despite being a psychologist. Richard Thaler, whose contributions to behavioral economics included nudge theory and mental accounting, received the Nobel in 2017. The field has moved from academic novelty to mainstream application.
A classic endowment effect mug experiment explains why people value things they own more than things that aren’t theirs.
Prospect theory explains why losses feel more significant
Kahneman and Tversky's Prospect Theory is arguably the most influential model in behavioral economics. Prospect theory describes how people actually evaluate outcomes, as opposed to how classical economics predicted they would.
The theory presented two key findings. One, people evaluate outcomes relative to a reference point (usually the status quo) rather than in absolute terms. For example, this explains why a $50 gain feels better when you started with nothing than when you started with $200. Secondly, losses feel roughly twice as painful as equivalent gains feel good. Losing £100 is psychologically worse than winning £100.
For marketing, prospect theory has direct applications:
Framing: “Save 200€ a year” lands differently from “costs less than a coffee a day” — same number, different reference point and loss/gain framing.
Free trials: They work partly because cancelling (losing access) triggers loss aversion once the product is in use.
Sunk cost marketing: Brands that remind customers of what they've already invested (think loyalty points, past purchases, membership years) activate loss aversion to reduce churn.
Risk communication: Framing a purchase as risk reduction (“protect your investment”) activates loss aversion. Framing it as gain (“grow your audience”) does not. Neither is universally more effective; the correct option for your brand depends on the audience's current orientation.
Nudge theory and choice architecture
Richard Thaler and Cass Sunstein's 2008 book Nudge introduced choice architecture. The book explored how profoundly the way options are presented affects which option gets chosen, without removing any choices or changing incentives.
A nudge is any aspect of choice architecture that predictably influences behaviour without forbidding any options or significantly changing economic incentives. Some examples include making organ donation opt-out rather than opt-in (which dramatically increases donation rates), placing healthier foods at eye level in cafeterias, and setting savings contribution rates to default to a higher level.
In marketing and brand strategy, choice architecture shows up constantly in:
Default options: What is the default choice on your subscription page? Defaults have an enormous influence over what people actually choose.
Option sequencing: The order in which pricing tiers are presented affects which one feels most reasonable.
Decoy pricing: Adding a third, less attractive option can make a target option appear much more appealing by comparison.
Simplification: Reducing the number of steps, fields, or decisions required to complete a purchase directly increases conversion.
Basically, choice architecture is everywhere in brand touchpoints: in how pricing is structured, in what order services are presented, and in what the default action is on any given page. Most of it is unintentional, but the brands that get it right make deliberate decisions about each of these moments. I have written about the psychology of pricing in another article, in case you want to learn more about effective pricing strategies.
Mental accounting
Mental accounting, also developed by Richard Thaler in 1985, describes the way people categorise and evaluate financial outcomes by grouping money into separate mental “accounts” that are not treated as fungible.
People think of money differently depending on where it came from, what category it belongs to, and what it is “earmarked” for. A bonus feels easier to spend than an earned paycheck. Money budgeted for the holiday is spent on the holiday even when a rational actor would reallocate it. A price expressed as a daily cost (eg. $1.90/day) is evaluated against daily expenditures, not annual ones, making it seem smaller even when the annual total is identical.
For brand strategy and pricing:
Framing costs as daily or monthly when the mental account for small daily expenses is more permissive than for large annual ones.
Bundling: Combining products into a single price rather than showing the individual cost of each item. Btw, this is exactly why cable packages, software suites, and service bundles tend to feel like value even when they include things the buyer wouldn't purchase separately.
Premium positioning: Price anchoring to a premium mental account changes evaluation criteria. A $35,000 branding project evaluated against a “marketing budget” category is assessed differently than the same project evaluated against a “cost of doing business” category.
The endowment effect
The endowment effect, also famously documented by Kahneman, Knetsch, and Thaler in 1990, is the finding that people place higher value on things they already own than on identical items they do not own. In classic experiments, people who were given a coffee mug demanded nearly twice as much to sell it as people without a mug were willing to pay for an identical one.
The endowment effect can also be used as another form of loss aversion: giving up something you already have feels like a loss, which is weighted more heavily than an equivalent gain.
In marketing, the endowment effect is the psychological foundation for several tactics:
Free trials: Once a product is ”owned” even temporarily, its perceived value increases, and cancellation triggers loss aversion.
Customisation: When buyers make choices (like configure their product, name their account, add personal details), they develop ownership feelings that increase attachment and reduce churn.
Samples and demos: Physical possession, even brief, activates the endowment effect and increases willingness to pay.
Our work for the Chutney Castle uses the endowment effect and the IKEA effect in packaging. The food waste workshop participant is invited to name their creation and write it by hand. This builds emotional attachment and loss aversion, making it more difficult to throw away food.
Present bias and temporal discounting
Present bias is the tendency to overweight immediate outcomes relative to future ones, even when the future benefit is objectively larger. Behavioural economist David Laibson modelled this with “hyperbolic discounting”, meaning people's preferences change over time in ways that are inconsistent with the perspective of rational choice theory.
Present bias explains why people sign up for gym memberships they rarely use, procrastinate on decisions with long-term payoffs, and consistently choose smaller immediate rewards over larger delayed ones.
For brand strategy and the following marketing strategies, present bias has two main use cases:
Buy now, pay later and instalment payments reduce the psychological weight of a purchase decision by shifting the cost to the future. This is also linked to a well-documented theory called “pain of paying”, which is covered in my other article.
Communicating the immediate benefit of a decision (for example, what changes for the buyer right now, this week) is more motivating than long-term ROI projections for buyers with strong present bias.
Status quo bias and switching costs
Samuelson and Zeckhauser documentedstatus quo bias — the preference for current arrangements over alternatives, even when the alternative is objectively better. This connects to loss aversion (changing feels like potential loss) and to the cognitive effort required to evaluate and act on an alternative.
Status quo bias is one of the primary obstacles in competitive customer acquisition. A buyer who is satisfied enough with their current supplier will often not switch even when presented with a genuinely better alternative, because the psychological cost of switching exceeds the perceived marginal benefit. Many clients of ours refer to this type of prospect as “hard sells”, as can be guessed from the name alone, it takes quite a lot of effort to make a sale, and often it’s not even worth the investment (time, money, resources) unless we’re talking about a high-ticket sale.
For brands trying to acquire customers from competitors, this means the case for switching must address emotional friction, not just rational value. “We're better” is very rarely enough as is. “We'll make switching completely painless, and you'll feel the difference in the first week”, speaks to both the psychological cost of switching and the benefit of doing so.
Understanding buyer psychology and the triggers (the ultimate “why now”) helps you to build better marketing and sales strategies.
How to combine behavioral economics and brand strategy
The thread running through all these concepts is that brand strategy is, in large part, applied behavioral economics (and a dash of consumer psychology and buyer psychology). Every decision about how to present a price, structure a service offering, sequence a customer journey, or frame a value proposition is a decision about choice architecture. Most of our clients have often built something like this, partially based on a few insights without the full picture. It can also be built deliberately and strategically (that’s what we help you to figure out).
At Ainoa, we think about behavioral economics as part of the strategic foundation of brand identity work — particularly in how brands communicate value, build trust across first impressions, and design the brand experience. A brand identity is not just a logo and colors, those should be visual outputs from strategy. It is a set of signals that activate psychological responses in buyers. Getting those signals right requires understanding the psychology.
To explore what this looks like in practice, take a look at our approach to brand strategy or browse our branding services.
Ainoa is one of the few truly consumer psychology specialised brand identity and strategy studios worldwide — we hire psychologists to solve brand problems.
Frequently asked questions
What is the difference between behavioral economics and consumer psychology?
Consumer psychology studies the mental processes that support buying decisions, such as perception, motivation, and attitude formation. Behavioral economics is a related but distinct discipline that specifically examines deviations from rational economic decision-making and uses economic frameworks to model them. In practice, the fields overlap significantly: cognitive biases, heuristics, and loss aversion are studied by researchers in both fields.
What is nudge theory in marketing?
Nudge theory holds that the way choices are presented (without removing options or changing incentives) predictably influences which option people select. In marketing, nudges include default settings, option sequencing, framing, and simplification of decision pathways. The goal is to make the desired behaviour the path of least resistance, without removing other options.
Can behavioral economics be used unethically in marketing?
Yup. Nudges and cognitive bias exploitation exist on a spectrum from genuinely helpful to manipulative. Making the right choice easier (ethical) is different from making the wrong choice harder to avoid (manipulative). The relevant question is whether the design serves the buyer's actual interests or primarily the seller's. Dark patterns (for example interfaces deliberately designed to trick users into unintended actions) are an example of behavioral economics deployed unethically. Ainoa is committed to ethical marketing practices.
Is behavioral economics relevant for small businesses?
Absolutely. The psychological mechanisms behavioral economics describes work regardless of brand size. A small brand's pricing structure, website navigation, free trial policy, and testimonial placement all involve choice architecture decisions. Making those decisions deliberately rather than by default is accessible at any scale. However, it’s the main strategy and application that can differ between small and bigger companies.
