What Is Behavioral Economics? Research Areas, Funding, and Career Paths

Behavioral economics is the branch of economics that studies how people actually make decisions about money, effort, time, and risk — as opposed to how a fully rational, self-interested decision-maker would make them. It borrows theory and experimental method from psychology and applies them to the classic questions of economics: how people choose among options, how markets and prices respond to those choices, and how public policy should be designed given how people genuinely behave rather than how textbook models assume they behave. Where standard neoclassical economics builds its predictions on a idealized rational agent (sometimes called homo economicus) who has stable preferences, unlimited computational ability, and perfect self-control, behavioral economics starts from the empirical observation that real decision-makers are systematically, predictably different — and asks what follows from that for economic theory, markets, and policy.

The field is young by economics’ standards. Its modern foundations were laid in the 1970s, when psychologists Daniel Kahneman and Amos Tversky began documenting consistent, reproducible patterns in how people judge probability and make choices under uncertainty. Kahneman was awarded the Nobel Memorial Prize in Economic Sciences in 2002 for this work (the first psychologist to receive it), and economist Richard Thaler received the same prize in 2017 for extending it into a systematic behavioral economics research program. Those two prizes are a useful marker of how thoroughly the field moved from a fringe critique of economic orthodoxy to a recognized, heavily cited subfield with its own journals, conferences, and doctoral training tracks.

This guide answers “what is behavioral economics” in real depth: its core concepts and questions, how it relates to the parent disciplines it draws on, its major subfields, and — because this page is published by CASRAI, a research-administration standards body — the funding landscape, research methods, and career pathways that matter to anyone conducting or administering behavioral economics research specifically.

What Is Behavioral Economics? A Working Definition

Behavioral economics studies systematic, predictable departures from the standard rational-choice model of economic behavior, and works out their consequences for markets, institutions, and policy. It operates on two related tracks:

• Descriptive: documenting how people actually judge probabilities, weigh gains and losses, trade off the present against the future, and respond to how choices are presented — then building formal models that predict those patterns better than the standard rational-agent model does.
• Prescriptive/applied: using that more accurate model of behavior to design better decision environments, financial products, workplace policies, and public programs — the “choice architecture” and “nudge” tradition associated with Thaler’s work with legal scholar Cass Sunstein.

A handful of concepts recur across the field and are worth naming directly:

• Bounded rationality. A concept introduced by economist and cognitive scientist Herbert Simon in the 1950s: people don’t optimize over unlimited information, they satisfice — they use limited cognitive resources and stop searching once they find a good-enough option. This is the conceptual root the rest of the field builds on.
• Heuristics and cognitive biases. Kahneman and Tversky’s central contribution: people rely on mental shortcuts (heuristics) that work well in general but produce specific, predictable errors (biases) in particular situations — overweighting vivid or recent information, anchoring on an arbitrary starting number, and similar patterns.
• Prospect theory. Kahneman and Tversky’s 1979 alternative to standard expected-utility theory: people evaluate outcomes as gains or losses relative to a reference point rather than in terms of absolute wealth, weight losses more heavily than equivalent gains (loss aversion), and distort small and large probabilities in systematic ways.
• Present bias and time-inconsistent discounting. People tend to weight the present disproportionately relative to standard exponential discounting, which produces choices that feel rational in the moment (skip the gym today, save starting next month) but conflict with a person’s own longer-run plans.
• Mental accounting. A concept developed by Thaler: people treat money as non-fungible, mentally sorting it into separate “accounts” (rent money, vacation money, windfall money) that get spent or protected according to different rules, contrary to the standard assumption that a dollar is a dollar regardless of its source.
• Choice architecture and nudges. How options are presented — defaults, framing, the order choices appear in — measurably changes what people choose, even when the underlying set of options is unchanged. A “nudge” is a deliberate change to that presentation that steers choices in a particular direction without restricting options or changing economic incentives.

How Behavioral Economics Relates to Neighboring Disciplines

Behavioral economics is fundamentally an interdisciplinary field, and understanding it means understanding what it takes from each of its two closest neighbors.

From economics, it takes the subject matter and much of the formal apparatus: markets, prices, incentives, welfare, and the mathematical tools (utility functions, game theory, econometrics) economists use to model choice and evaluate outcomes. Behavioral economics is standardly classified as a field within economics — most behavioral economists hold economics PhDs, publish in economics journals, and are evaluated against economics’ methodological standards, particularly its emphasis on formal models that generate testable, quantitative predictions.

From psychology — specifically cognitive and social psychology — it takes the empirical starting point and much of its experimental method: the idea that decision-making is a psychological process with documentable regularities and limits, and the controlled-experiment methodology psychologists developed to study judgment, memory, and social behavior. Where cognitive psychology studies judgment and decision-making as ends in themselves, behavioral economics asks specifically what those findings imply for economic behavior — consumption, saving, investment, labor supply, and market outcomes — and for the design of economic institutions and policy.

The result sits in the overlap: it is economics that takes psychological realism seriously, and psychology applied specifically to economic decisions and institutions, rather than a simple sum of the two parent fields. A useful boundary case is experimental economics, a closely related but distinct methodological tradition (controlled, often incentivized experiments used to test economic theory generally, not only its behavioral variants) that behavioral economics draws on heavily as a toolkit without being identical to it.

Major Subfields and Branches of Behavioral Economics

As the field has matured, several more specialized subfields have developed around particular applications or methods:

• Behavioral finance. Applies behavioral-economics concepts (loss aversion, overconfidence, herding, mental accounting) to financial markets and investor behavior — explaining market anomalies, bubbles, and individual investment mistakes that standard efficient-markets theory has difficulty accounting for.
• Neuroeconomics. Uses neuroscience methods — brain imaging (fMRI), physiological measures, and single-neuron recording in animal models — to study the biological processes underlying economic decisions, aiming to ground behavioral patterns in identifiable neural mechanisms rather than behavior alone.
• Behavioral game theory. Studies strategic interaction (bargaining, competition, cooperation) under the more realistic assumption that players have bounded rationality and social preferences — concern for fairness and reciprocity, not only their own payoff — rather than the pure self-interest standard game theory assumes.
• Behavioral public economics / behavioral welfare economics. Applies behavioral findings to the design of public policy and welfare analysis — retirement-savings defaults, tax compliance, health-insurance enrollment, energy-use disclosure — and to the harder normative question of how to evaluate welfare when people’s choices don’t reliably track their own well-being.
• Behavioral development economics. Applies behavioral concepts and randomized field experiments to decision-making in low- and middle-income settings — savings behavior, agricultural technology adoption, health-product take-up — a tradition closely associated with the randomized-controlled-trial movement in development economics.

Who Funds Behavioral Economics Research

Behavioral economics research funding runs through several channels, spanning basic social-science funding, health-focused funding tied to specific behaviors, and a small number of foundations with long-standing programs in the field.

• National Science Foundation (NSF). The NSF‘s Directorate for Social, Behavioral and Economic Sciences (SBE) is the primary federal home for basic behavioral-economics research. Within SBE, the Economics Program funds behavioral and experimental economics as an established field alongside other economics subfields, and the Decision, Risk, and Management Sciences (DRMS) program funds descriptive and normative research on judgment and decision-making that spans economics, psychology, and management science — the closest single NSF program match to behavioral economics as an interdisciplinary field.
• National Institutes of Health (NIH). Because so much of health behavior — smoking, medication adherence, diet, exercise, retirement and long-term-care planning — is a decision problem, several NIH institutes fund behavioral economics applied to health. NIH’s Office of Behavioral and Social Sciences Research (OBSSR) coordinates and promotes this work across institutes; specific programs of long-standing behavioral-economics-relevant funding include the National Institute on Aging’s research on financial and health decision-making in older adults, and the National Institute on Drug Abuse’s research on delay discounting and addictive behavior, among others. Researchers should verify the current funding opportunity announcements directly on grants.nih.gov and the relevant institute’s site, since specific program structures change over time.
• Russell Sage Foundation. A private foundation with a long-standing, dedicated Behavioral Economics research program — one of the most consistent private funders specifically of behavioral economics as a field since the early 2000s, supporting both basic research and visiting scholarships in the area.
• Other private foundations. A number of general social-science and economics funders — including foundations that support empirical and experimental economics more broadly — fund behavioral-economics projects as part of a wider economics or decision-science portfolio rather than a dedicated behavioral-economics program; researchers should check a given foundation’s current funding priorities directly rather than assume a standing program, since these shift.

Government “behavioral insights” units are a related but distinct funding-adjacent institution worth noting for research-administration purposes: government bodies including the UK’s Behavioural Insights Team (established 2010) and the United States’ Social and Behavioral Sciences Team (established by executive order in 2015) apply behavioral-economics findings directly to public programs, and have in some cases commissioned or partnered on applied research, though their primary role is policy application rather than basic-research grantmaking.

Research Methods and Tools in Behavioral Economics

Behavioral economics is a heavily empirical field, and its methodological toolkit reflects its dual economics/psychology parentage:

• Laboratory experiments. Controlled, often financially incentivized decision tasks conducted with human participants — the core method inherited from experimental economics and cognitive psychology, used to isolate a specific mechanism (a bias, a framing effect) under controlled conditions.
• Field experiments and randomized controlled trials (RCTs). Testing behavioral interventions — a changed default, a reminder message, a redesigned form — in real-world settings such as workplaces, retirement plans, or government programs, where results are more directly policy-relevant than lab findings but harder to control tightly.
• Surveys and choice experiments. Structured elicitation of stated preferences, risk attitudes, and time preferences, often combined with incentivized choice tasks to check that stated preferences match revealed behavior.
• Econometric analysis of observational and administrative data. Applying quasi-experimental methods (natural experiments, regression discontinuity, difference-in-differences) to large administrative or transaction datasets — retirement-account records, insurance claims, purchase histories — to detect behavioral patterns at scale outside the lab.
• Neuroeconomic methods. Brain imaging, eye-tracking, and physiological measurement (skin conductance, pupil dilation) used to study the biological correlates of decision-making, mainly within the neuroeconomics subfield described above.
• Replication and preregistration. Like much of experimental psychology, behavioral economics has been directly affected by the broader replication crisis in the social sciences; preregistering hypotheses and analysis plans, and running large-sample replications of classic findings, have become increasingly standard practice for methodologically rigorous work in the field.

Career and Training Pathways

Because behavioral economics sits between two disciplines, there is no single standard training path into it — but a few patterns are well established:

• Graduate training. Most professional behavioral economists hold a PhD in economics with a behavioral or experimental field, earned through a standard economics doctoral program (coursework in microeconomics, econometrics, and game theory, followed by a dissertation) with a specialization in behavioral topics. A smaller number come from psychology PhD programs specializing in judgment and decision-making, or from interdisciplinary doctoral tracks that combine coursework across economics, psychology, and business-school decision-science departments.
• Professional societies. The Society for Judgment and Decision Making (SJDM), an interdisciplinary society spanning psychology, economics, and management, is the field’s longest-running dedicated professional home for decision-research scholars. The American Economic Association (AEA) hosts behavioral-economics sessions and a dedicated field classification within its broader annual meeting and journal system, and the Association for Psychological Science (APS) serves researchers coming from the psychology side. Behavioral economics is an academic and applied research field, not a licensed profession — there is no certification or licensure requirement analogous to, say, clinical psychology.
• Career paths. Graduates go on to academic faculty positions in economics, psychology, and business-school departments; research roles at central banks and government economic-research agencies; applied “behavioral insights” or “nudge unit” roles in government; behavioral-science and user-research roles in the technology and consumer-products industries; and behavioral-finance roles in asset management and financial-services firms.

Frequently Asked Questions

Is behavioral economics part of economics or psychology?

Formally, it is classified as a field within economics — most behavioral economists hold economics PhDs and publish in economics journals — but it draws its empirical foundations and much of its experimental method directly from psychology, which is why it’s genuinely interdisciplinary rather than economics with a few psychological footnotes.

What is the difference between behavioral economics and standard (neoclassical) economics?

Standard economics builds its models on a fully rational, self-interested decision-maker with stable preferences and unlimited computational ability. Behavioral economics starts from documented, systematic ways real people depart from that model — bounded rationality, loss aversion, present bias, and similar patterns — and builds alternative models and policy recommendations around those departures.

Do you need a PhD to work in behavioral economics?

For research and academic roles, yes — a PhD in economics or psychology with a behavioral/decision-science specialization is the standard credential. Applied roles in industry (behavioral-science or user-research positions) sometimes accept a master’s degree plus relevant research experience, though competitive research-focused roles increasingly expect doctoral training.

What jobs can you get with a background in behavioral economics?

Common paths include academic faculty positions, research roles at central banks and government agencies, government “behavioral insights” or nudge-unit roles, behavioral-science or UX-research roles in technology and consumer companies, and behavioral-finance roles in asset management.

Who are the most influential figures in behavioral economics?

Daniel Kahneman and Amos Tversky’s work on heuristics, biases, and prospect theory in the 1970s laid the field’s empirical foundation; Richard Thaler extended it into a systematic economics research program, including the choice-architecture and “nudge” framework developed with legal scholar Cass Sunstein. Kahneman (2002) and Thaler (2017) both received the Nobel Memorial Prize in Economic Sciences for this work.

Related CASRAI Resources

This guide is part of CASRAI’s Branches of Science library, a growing index of deep-dive guides to individual academic and scientific disciplines. See also:

• What Is Economics? — the parent discipline behavioral economics sits within.
• What Is Psychology? — the discipline behavioral economics draws its experimental and cognitive foundations from.
• What Is Operations Research? — a related decision-science field studying optimization and decision-making under uncertainty.
• What Is Communication Studies? — relevant to how framing, messaging, and choice architecture shape behavior.
• What Is Urban Planning? — a field where behavioral-economics-informed nudges are increasingly applied to public policy design.