Economic Behavior

1951–1965 · 1 of 9

Intertemporal Choice under Uncertainty

1951–1965

Intertemporal Choice under Uncertainty

Contemporary themes

The 1951–1965 period fused intertemporal decision-making with macroeconomic dynamics, linking the consumption function to forward-looking income, price responsiveness, and adjustment processes across households and firms. Research emphasized forecasting of consumer and investment responses, the role of expectations in price movements, and the integration of psychology with economic choice, including risk and sequential decision patterns. Models of market structure under imperfect competition, together with formalization of capital investment and monetary utility under uncertainty, solidified a dynamic, expectation-driven perspective across macro, micro, and finance contexts.

  • Consumption-demand framework: A theoretical and empirical core pattern links consumption function, price responsiveness, and demand adjustments in macro and micro contexts, integrating forecasting of farmer responses and general price dynamics across multiple works.
  • Pattern: integration of psychology with economic choice, emphasizing sequential decisions, risk, and reward structures, with models of preference aggregation, nontransitive choice, and heuristics.
  • Pattern: formalization of market structures (monopolistic competition, oligopoly) and price-mechanism under imperfect competition, alongside classical supply-demand frameworks.
  • Pattern: analysis of capital investment, stock-market behavior, and monetary utility under uncertainty, combining capital theory with empirical finance propositions such as random-walk stock prices, investment behavior, and monetary gains/losses.
  • Pattern: exploration of the historical mind of economics, pricing morality, and cycles through normative and policy-oriented perspectives, combining philosophy of economics with economic policy concerns.

Influential works

Groundbreaking developments—permanent income formalization in the consumption function, the rise of rational expectations, and the identification of learning-by-doing effects—reevaluated how agents forecast, invest, and adapt over time. These pillars reshaped macroeconomic modeling, investment theory, and empirical finance, laying the groundwork for dynamic policy analysis and the evolution of efficiency debates in financial markets.

  • The Theory of the Consumption Function (1957) introduced the permanent income hypothesis and formalized how consumption relates to long-run income rather than current income alone, shaping intertemporal choice and macro models for decades.
  • Rational Expectations and the Theory of Price Movements (1961) proposed that agents form forecasts using optimal models, making systematic errors unlikely; this reframed expectations in macroeconomics and policy evaluation, with long-lasting impact.
  • The Economic Implications of Learning by Doing (1962) showed that productivity rises with cumulative production via experiential learning, justifying dynamic investment and informing growth theory and firm strategy over time.
  • The Behavior of Stock-Market Prices (1965) argued that price changes are largely unpredictable and follow a random process given information, foreshadowing efficient-market concepts and reshaping empirical finance research.

1966–1972

Foundational Behavioral Economics

Contemporary themes

During the period 1966-1972, economic behavior research coalesced around a behavioral decision-making paradigm that treats preferences as context-sensitive and information processing as central. Researchers integrated consumer attitudes, price perception, and purchasing choices using experiments and models that incorporate biases, subjective value, and social factors. Investment behavior emphasized time structure, anticipations, and planning, linking manufacturing investment to evolving expectations and challenging purely neoclassical accounts. Social exchange and fairness norms were embedded within economic incentives, and noncooperative games and bidding illustrated escalation and paradoxes of rationality in competitive settings.

  • Behavioral decision-making in economic behavior emerges as a unifying framework across consumer attitudes, price perception, and purchasing choices, showing how subjective value, biases, and processing influence behavior in markets and games.
  • Investment behavior research emphasizes time structure, anticipations, and planning, linking manufacturing investment decisions to evolving expectations and neoclassical critique of investment theory.
  • Social exchange in economics reveals how equity, reciprocity, and attribution shape reward allocation and cooperative interactions, integrating fairness norms with economic incentives.
  • Noncooperative games and bidding show escalation and paradoxes of rational behavior, with dollar auction dynamics, competitive bidding probabilities, and risk considerations guiding strategic outcomes.

Influential works

These developments established a durable framework for analyzing economic behavior that blends psychology, game theory, and learning dynamics. Concepts of reciprocal exchange and cooperation beyond kinship emerged as core ideas influencing social preferences and reputation in economic interactions. Learning-by-doing and buyer behavior modeling provided enduring mechanisms for explaining productivity growth and consumer decision processes, while methodological innovations in experimentation and normative reasoning guided subsequent research on bounded rationality and behavioral policy.

  • The Evolution of Reciprocal Altruism (1971) introduced reciprocal altruism as a mechanism for cooperation beyond kin selection, showing how repeated interactions and reputation sustain cooperative behavior; it reshaped evolutionary game theory and seeded behavioral economics, influencing later work on social preferences.
  • The Economic Implications of Learning by Doing (1971) argues that cumulative production experience reduces costs and raises productivity, making learning-by-doing a central driver of growth and firm competitiveness; it laid the basis for path-dependent investment and industrial evolution theories.
  • The Theory of Buyer Behavior (1971) offers a structured model of consumer decision-making, linking information processing, preferences, and choices, and accounting for perception and situational factors beyond pure utility maximization; widely influential for marketing science.
  • The Prediction of Behavior from Attitudinal and Normative Variables (1970) demonstrates that behavior can be forecast from attitudes and social norms, bridging psychology and economics and foreshadowing later behavioral and policy research on social influence.

1973–1981

Information Economics of Behavior

Contemporary themes

During 1973–1981, research coalesced around information-driven explanations of economic choice and the dynamic evolution of preferences under uncertainty. Researchers mapped how information structures, signaling, and probabilistic tastes govern decision rules, brand switching, search, and intertemporal investments. The literature linked consumer behavior with organizational buying, emphasizing information flow, market structure, and risk-aware planning within utility-based frameworks.

  • Dynamic Taste Evolution and Sequential Decision Making: A family of studies treats consumer preferences as evolving with experience and context, producing coherent dynamic choice rules and planning under uncertainty across periods.
  • Information, Uncertainty, and Decision Rules in Economic Behavior: Researchers model how information structures and stochastic preferences influence brand switching, search, and money demand, revealing information-framed decision processes in consumer markets.
  • Behavioral Foundations of Demand and Preference Structure: Integrating intrinsic motivation, salience, and psychological factors into economic demand broadens the explanatory power of consumer choice and the structure of preferences.
  • Organizational and Industrial Buying as Part of Economic Behavior: Studies connect consumer buying with organizational procurement, examining decision chains, information flow, and market structure in both consumer and enterprise contexts.
  • Risk, Intertemporal Choice, and Utility-Based Optimization: The literature develops investment–consumption strategies under risk, dynamic choice, and monetary decisions using utility-based models.

Influential works

Seminal contributions include Job Market Signaling; Markets and Hierarchies; The Economics of Information; An Almost Ideal Demand System; and a household bargaining framework extending the theory of demand. These works established signaling and information frictions as core determinants of market outcomes, articulated governance choices between markets and hierarchies, and provided flexible demand estimation tools that shaped both micro and macro economics for decades. Together, they unified information, organization, and intertemporal decision making as central pillars of economic behavior.

  • Job Market Signaling (1973) introduced signaling games to labor markets, showing how education acts as a credible signal of ability, generating separating equilibria and shaping subsequent theories of screening, hiring, and contract design with lasting impact on information economics.
  • Markets and Hierarchies (1975) laid the transaction cost economics foundation, explaining why firms organize production via markets or hierarchical governance, predicting vertical integration decisions, and shaping organization theory for decades.
  • The Economics of Information (1976) synthesized information economics, highlighting how information imperfections drive market outcomes; foundational for later work on signaling, screening, and market design, with lasting cross-disciplinary influence.
  • An Almost Ideal Demand System (1980) proposed a flexible demand system that approximates consumer spending patterns with an almost ideal functional form, enabling consistent estimation of price and expenditure elasticities used across macro and micro applied economics.
  • Nash-Bargained Household Decisions: Toward a Generalization of the Theory of Demand (1981) extended Nash bargaining to household choices, providing a formal framework for intra-household allocation and welfare sharing, influencing research on family economics and collective decision making.

1982–1988

Behavioral Mechanism Design

Contemporary themes

During 1982-1988, research unified market design, auctions, and pricing mechanisms under uncertainty, emphasizing how institutional rules shape strategic interaction and outcomes. Behavioral economics and economic psychology increasingly integrated into mainstream theory, enriching models with bounded rationality, social context, and a focus on preferences and choice under uncertainty. Intertemporal consumption decisions and life-cycle considerations linked spending trajectories to unemployment risk and perceived stability, while meta-analysis of economic method and advances in econometrics intensified the study of how financial markets reflect investor behavior and policy effects.

  • Market design and pricing mechanisms unify this period’s work, analyzing how institutional rules—auctions, monopolistic selling, switching costs, predatory pricing, and price competition under uncertainty—shape outcomes; theoretical and empirical questions converge on strategic interaction and mechanism design.
  • Behavioral economics and economic psychology drove integration of decision theory, bounded rationality, social influence, and consumer behavior into mainstream economics, with emphasis on preferences, choice under rejection, impulse vs planning, and social context.
  • Intertemporal consumption decisions and life-cycle considerations emerge as a core theme, linking consumption trajectories with unemployment, perceived stability, and questions about smoothing across time.
  • Foundations of economic method and the evolution of economic thought provide meta-analysis of how economic inquiry progresses, shaping policy in light of methodological debates and history.
  • Financial market behavior and econometric interpretation of money and asset markets highlight how investor behavior and macro-finance considerations interact with policy, uncertainty, and measurement.

Influential works

The period produced foundational breakthroughs in mechanism design and auction theory, including formal treatments of bidding formats and revenue implications, alongside the real options framework for investment under uncertainty. It also established switching costs and sunk costs as central drivers of inertia and market structure, guiding subsequent work in competition and platform dynamics. Collectively, these innovations reframed rational choice, bridged economic theory with empirical behavior, and laid the groundwork for modern pricing, dynamic decision making, and behavioral finance.

  • Introduces formal auction theory with bidding strategies, revenue considerations, and mechanism design implications; clarifies how auction formats shape outcomes and strategic behavior, laying groundwork for modern microeconomics and computational auctions, catalyzing later work in pricing, bargaining and market design.
  • Presents a real options framework treating investment under uncertainty as an option to wait; explains why firms delay or accelerate capital spending; revolutionized corporate finance and investment theory, influencing policy modeling and growth analysis.
  • Shows that switching costs generate inertia, price dispersion, and durable competitive advantage; introduces path dependence in market dynamics, shaping research on competition, platform economics, and consumer welfare.
  • Systematically analyzes the sunk cost effect in economic decisions, linking losses to commitment and escalation; a milestone for behavioral economics and managerial decision making.
  • Extends utility theory to account for anticipation under uncertainty; influences models of dynamic choice, risk-taking and time-inconsistent decisions; foundational for behavioral decision research.

1989–1995

Behavioral Market Dynamics

Contemporary themes

The period reveals a synthesis of decision theory, consumer choice, and consumption dynamics with experimental and theoretical work on habit formation, consumption smoothing, and planned-behavior mechanisms shaping spending and leisure decisions across time. In auctions and market design, researchers compare single-object auctions, winner's curse phenomena, and misbehavior in first-price auctions, blending experimental and theoretical insights to reveal strategic biases in bidding and market outcomes. The literature also situates economics within social structures and market-oriented institutions, examining how narratives and institutional contexts influence consumption patterns and policy implications. Dynamic, evolutionary, and game-theoretic perspectives highlight herd effects, feedback-driven investment dynamics, and network-like market interactions that shape macro-level outcomes. Cognition and perception are central to economic behavior, with narratives, biases, and misperceptions guiding decisions in both consumption and asset markets.

  • This theme highlights decision theory, consumer choice, and consumption dynamics, emphasizing habit formation, smoothing of consumption, and planned-behavior mechanisms shaping spending and leisure decisions across time.
  • Across auctions and market design, papers compare single-object auctions, winner's curse phenomena, and misbehavior in first-price auctions, combining experimental and theoretical insights to reveal strategic biases in bidding and market outcomes.
  • Economic behavior is shaped by social structures and market-oriented institutions, linking sociology with economics and examining antecedents/consequences of market orientation and narrative frames in consumption.
  • Dynamic, evolutionary, and game-theoretic perspectives frame strategic behavior, with herd effects, evolutionary games, and feedback-driven investment dynamics shaping market outcomes.
  • Cognition and perception shape economic behavior via narratives, biases, and misperceptions, including illusionary markets, winner's curse effects, and psychology of buying in consumption and assets.

Influential works

The period marks a consolidation of cross-disciplinary mechanisms that continue to inform research trajectories. Foundational work on warm-glow altruism reframes charitable giving by showing that utility derives from the act of giving itself, informing policy design and empirical tests of public goods provision. Self-reinforcing dynamics and path dependence illuminate technology adoption, standards formation, and network effects, laying groundwork for subsequent complexity-informed analyses of economic evolution. The consumer-values framework unifies functional, social, emotional, and conditional motives for choice, guiding product design and segmentation. Studies on information cascades and herd behavior provide a baseline for behavioral finance and market-dynamics policy discussions, while the articulation of market orientation links internal organizational processes to performance and learning, shaping strategy, marketing practice, and research on firm strategy.

  • Impure Altruism and Donations to Public Goods: A Theory of Warm-Glow Giving introduced warm-glow altruism, showing donors derive utility from giving itself in addition to pure altruistic motives; formalizes donation behavior and public goods funding, reshaping charitable policy, fundraising, and empirical tests; foundational for subsequent work on altruism and philanthropy.
  • Increasing Returns and Path Dependence in the Economy by W. Brian Arthur formalizes self-reinforcing dynamics and path dependence, challenging diminishing-returns assumptions; explains technology adoption, standards formation, and network effects, laying the groundwork for complexity economics and influential studies of industry evolution.
  • Why we buy what we buy: A theory of consumption values proposes that consumer choice rests on functional, social, emotional, and conditional values, unifying diverse motives; widely adopted in marketing and consumer research, guiding product design and value-based segmentation.
  • Herd Behavior and Investment formalizes how investors imitate others and follow signals, creating information cascades and price movements that diverge from fundamentals; foundational for behavioral finance and market-dynamics policy discussions.
  • Market Orientation: Antecedents and Consequences defines market orientation as firm-wide customer focus and information processing; links it to performance and learning, shaping later research on strategy, organizational learning, and marketing practice.

1996–2002

Late-1990s Behavioral Finance

Contemporary themes

The late 1990s crystallized a behavioral turn in economics, interpreting asset markets through investor psychology, sentiment, and herding, and linking consumption dynamics to price movements and market overreactions. Social preferences, fairness, reciprocity, and cooperative competition emerged as core determinants of strategic choices and institutional design. Consumption dynamics driven by habit formation, self-control, and temporality shaped saving, buying behavior, and welfare interpretations across markets, while happiness and well-being began to be integrated with economic performance and institutions.

  • Behavioral foundations frame asset markets through investor psychology, sentiment, and herding, linking consumption patterns to price dynamics and market overreactions
  • Social preferences, fairness, reciprocity, and cooperative competition emerge as core determinants of strategic choices and institutional design
  • Consumption dynamics driven by habit formation, self-control, and temporality shape saving, buying behavior, and welfare interpretations across markets
  • Happiness and well-being are integrated with economic performance and institutions, reframing growth with quality-of-life considerations and inequality patterns
  • Home bias and choice biases reveal systematic deviations in cross-border investment and consumer decisions, highlighting preferences for familiar options

Influential works

This period solidified the behavioral finance paradigm, embedding preference- and habit-based explanations into mainstream theory and practice and bridging psychology with finance to reshape models of asset pricing, market dynamics, and policy evaluation.

  • Intrinsic and Extrinsic Motivations: Classic Definitions and New Directions (2000) clarifies the distinction between intrinsic and extrinsic motivations, introducing autonomy/competence/relatedness as drivers and reshaping incentive design in economics and related fields.
  • A Theory of Fairness, Competition, and Cooperation (1999) presents a formal model of social preferences, embedding fairness concerns into strategic choice and cooperation. It laid groundwork for modern behavioral economics by showing how fairness expectations reshape markets and collective action.
  • Fairness and Retaliation: The Economics of Reciprocity (2000) provides experimental evidence that fairness preferences and reciprocal responses influence strategic behavior, prompting widespread adoption of reciprocity in models and empirical work across economics.
  • By Force of Habit: A Consumption‐Based Explanation of Aggregate Stock Market Behavior (1999) introduces habit formation in consumption, linking enduring consumption patterns to asset pricing and market dynamics, influencing macro-finance models and empirical tests.

2003–2009

Bounded Rationality in Markets

Contemporary themes

Economic behavior research from 2003 to 2009 increasingly treated decision making as bounded by cognitive limits, context, and social considerations. Experimental and field work highlighted how cognitive biases, choice overload, and framing effects shape consumer and investor choices, while social preferences and fairness norms influenced market participation and allocation. Neuropsychological and attentional processes were linked to buying and money-related decisions, underscoring the brain's role in reward and information processing. Market design and institutional rules emerged as active shapers of behavior and liquidity, illustrating how governance structures influence choice patterns and welfare.

  • Cognitive biases, choice overload, and framing effects shape economic decisions, with forced-choice and preference reversals illustrating bounded rationality across consumer and investor contexts, supported by decision theory and behavior studies.
  • Social preferences, fairness norms, and inequality concerns influence market participation and allocation decisions, showing reciprocity and reference-dependence as organizing principles in economic behavior.
  • Neural, psychological, and attentional processes underpin purchases and money-related decisions, linking brain signals to buying behavior and reward processing across individual and market contexts.
  • Self-control, time preference, and impulse tendencies shape consumption trajectories and budgeting, highlighting the interplay between hedonic motives and restraint.
  • Market design and institutional mechanisms modulate decision outcomes, liquidity, and consumer choice patterns, emphasizing the role of market rules and analysis in shaping behavior.

Influential works

This period cemented an integrative framework that merges behavioral insights with finance and macroeconomics, advancing models of life-cycle consumption and portfolio choice and broadening the reach of behavioral mechanisms across markets. It also emphasized how incentives interact with intrinsic motivation, shaping prosocial actions and market outcomes and setting the stage for policy-aware market design and regulation.

  • The Paradox of Choice: Why More Is Less (2004) introduced rigorous experiments showing that excessive option sets can reduce welfare and satisfaction, shaping subsequent research on choice overload, consumer behavior, and policy design.
  • The Theory of Planned Behaviour (2004) formalizes how attitudes, perceived norms, and perceived behavioral control jointly predict intentions and actions, becoming a foundational framework for modeling economic and consumer decision making.
  • All That Glitters: The Effect of Attention and News on the Buying Behavior of Individual and Institutional Investors (2007) demonstrates that investor attention and news flow drive trading and portfolio decisions, highlighting information processing limits and creating a basis for attention economics in finance.
  • Incentives and Prosocial Behavior (2006) explores how incentives interact with intrinsic motivation and social preferences, showing that external rewards can crowd out or align prosocial actions, informing contract design and behavioral economics.
  • Consumption and Portfolio Choice over the Life Cycle (2005) presents a dynamic life-cycle model of consumption and portfolio choice, integrating risk, savings, and retirement planning, influential for macro-finance and behavioral savings research.

2010–2016

Behavioral Economics and Finance

Contemporary themes

The period reveals a cohesive behavioral paradigm in which framing, salience, and social influence consistently shape economic decisions, from impulsive and compulsive buying to risk evaluation and luxury consumption. Across markets and channels, experimental and field evidence shows how trait correlates, intrinsic factors, and price cues interact with social signaling to steer consumer and investor behavior, producing cross-cutting patterns that challenge fully rational models. This synthesis of cognitive-structural patterns and contextual cues unified research across disciplines and methods. Historial Significance: Foundational works during this era bridged psychology and economics, establishing framing, salience, and endogenous preferences as central mechanisms in decision making. The highlighted studies demonstrated that preferences are shaped by norms, culture, and institutions, and that herd behavior and biases generate synchronized market dynamics across contexts, propelling the development of behavioral finance and cultural economics. Collectively, these innovations expanded the analytical toolkit for modeling risk, value, and choice under uncertainty, with lasting implications for policy design and market regulation.

  • Impulsive buying behavior emerges as a cross-cutting pattern, where trait correlates, intrinsic factors, and situational price cues consistently predict impulsive buying and compulsive buying across different markets and channels.
  • Framing, value perceptions, and attention to focus produce systematic variation in economic choices—from risk framing and value-based tradeoffs to luxury consumption—demonstrating a cohesive cognitive-structural pattern across studies.
  • Herding and social influence shape market dynamics and investor behavior across geographic contexts, with global stock-market herding and Chinese-market studies offering convergent evidence, complemented by broader behavioral determinants of investor choices.
  • Value perceptions, luxury aspirations, and eco-conscious choices drive cross-market consumption patterns, from luxury purchase intentions to green consumer behavior, highlighting how perceived value and social signaling shape demand.

Influential works

  • Choices, Values, and Frames (2013) synthesizes how framing and reference points shape economic decisions, extending framing effects from psychology into economics. It demonstrates that presentation alters perceived value, risk-taking, and choice, driving policy and marketing applications and reformulating how economists model preferences.
  • Salience and Consumer Choice (2013) shows that salient cues strongly steer consumer choices even when underlying utilities are unchanged. Through experiments and field evidence, it introduces salience as a core mechanism in decision making, shaping models of demand, nudges, and policy design.
  • The Behavior of Individual Investors (2013) documents systematic biases in individual investing, including overreaction, underreaction, and disposition effects, challenging fully rational-actor models and aiding the rise of behavioral finance and market microstructure research.
  • Endogenous Preferences: The Cultural Consequences of Markets and Other Economic Institutions (2016) argues that preferences are shaped by social norms, culture, and institutions rather than fixed. It emphasizes how markets influence desires, risk tolerance, and welfare considerations, guiding later research on policy design and cultural economics.
  • An empirical analysis of herd behavior in global stock markets (2010) provides evidence of herd behavior across markets, demonstrating synchronized trading and contagion during crises. It advanced behavioral finance and informed policy debates on market stability and regulation.

2017–2023

Narrative-Driven Behavioral Economics

Contemporary themes

\nThe period centers on a narrative-informed understanding of consumer behavior and markets, linking impulse buying in online and mobile contexts to interface quality, scarcity cues, and promotional framing, while green consumption and EV adoption reflect attitudes and perceived value within socio-economic contexts. Herding behavior and market sentiment shape volatility in traditional and crypto markets, underpinned by theoretical and decision-science foundations such as game theory and extensions of the theory of planned behavior. Methodological diversity, including field experiments, meta-analyses, SEM/PLS-SEM, and literature analyses, supports cross-domain integration of impulse buying and green-consumption findings.\n\nHistorical Significance:\nThe era extends narrative-based behavioral explanations into crisis-driven phenomena such as pandemic stimulus-driven purchases, information shocks, fear, lockdowns, and diversion effects, shaping risk and policy tradeoffs in behavioral economics. It marks a shift from purely rational models toward context-aware, narrative-informed accounts of how information, dispositions, and situational cues drive consumption and financial activity. The resulting paradigm unifies consumer behavior research across marketing, finance, and public policy, offering a durable lens for analyzing contemporary markets and guiding evidence-based interventions.

  • Impulse buying in online/mobile settings is shaped by interface quality, scarcity cues, and promotional framing, integrated across field experiments, literature analyses, and meta-analytic reviews.
  • Green consumption and electric vehicle (EV) adoption reflect attitudes, perceived value, and socio-economic context, evidenced through studies on energy-efficient appliances, EV uptake in China and Hong Kong, and willingness-to-pay analyses.
  • Herding behavior and market sentiment shape volatility in traditional and crypto markets, highlighting behavioral finance mechanisms across sectors and assets.
  • Theoretical and decision-science foundations underpin consumer economic behavior, blending game theory, theory of planned behavior extensions, and stated-preference/decision models.
  • Methodological diversity enables cross-domain integration of findings through SEM/PLS-SEM, field experiments, meta-analysis, and literature analyses across impulse buying and green-consumption literatures.

Influential works

  • Narrative Economics (2017) introduced the idea that shared narratives steer economic outcomes by shaping expectations and behavior, linking media attention to asset prices and macro cycles. This reframing spurred data-driven studies across economics and beyond, with lasting impact on both policy discourse and behavioral finance.
  • Unusual purchasing behavior during the early stages of the COVID-19 pandemic: The stimulus-organism-response approach (2020) applies a behavioral framework to explain panic buying and stockpiling, showing how information shocks and consumer dispositions trigger rapid demand shifts with lasting implications for emergency response and consumer research.
  • Fear, lockdown, and diversion: Comparing drivers of pandemic economic decline (2021) analyzes how fear, policy restrictions, and diversion effects differentially dampened consumption and labor markets, shaping early pandemic trajectories and informing subsequent behavioral economic models of risk, heterogeneity, and policy tradeoffs.
  • Impulse buying: a meta-analytic review (2019) aggregates drivers of spontaneous purchases—affect, hedonic needs, situational cues—producing a consolidated framework that influenced marketing, consumer psychology and later behavioral econ work on self-control and gratification.