Prospect Theory in International Relations
Also known as: Prospect Theory IR, Loss Aversion in Foreign Policy, Framing and Risk in International Relations, Behavioral Decision Theory in IR
Prospect theory, the behavioral account of choice under risk developed by Kahneman and Tversky, has been applied across international relations to explain foreign-policy decisions that expected-utility models struggle with. As surveyed and assessed by Jack Levy (1997), the key ideas are that leaders evaluate outcomes as gains and losses relative to a reference point rather than in absolute terms, that losses loom larger than equivalent gains (loss aversion), and that people are risk-averse for gains but risk-seeking to avoid losses. These departures from rationality illuminate why states gamble to recover losses and take excessive risks to defend the status quo.
Key highlights
- Explains systematic risk behavior — especially risk-seeking to avoid losses — that expected-utility models miss.
- Grounded in robust experimental psychology with well-established empirical regularities.
- Illuminates the status-quo bias, endowment effects, and sunk-cost behavior common in foreign policy.
- Provides a disciplined behavioral alternative to rational-choice accounts of crisis decisions.
Intuition
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How it works
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When to use it
Use prospect theory in IR when a decision deviates from expected-utility predictions in ways tied to framing, reference points, and loss aversion — gambling to recover losses, overvaluing the status quo, refusing to cut sunk costs, or taking outsized risks to avoid losses. It is well suited to case-based explanation of specific decisions. It is less appropriate when reference points cannot be independently established (risking circularity), when collective decision processes blur individual psychology, or when aggregate prediction rather than decision-level explanation is the goal.
Strengths & limitations
- Explains systematic risk behavior — especially risk-seeking to avoid losses — that expected-utility models miss.
- Grounded in robust experimental psychology with well-established empirical regularities.
- Illuminates the status-quo bias, endowment effects, and sunk-cost behavior common in foreign policy.
- Provides a disciplined behavioral alternative to rational-choice accounts of crisis decisions.
- Identifying the reference point ex ante is difficult and, if done post hoc, risks circular explanation.
- The theory is built on individual lab choices, while foreign policy is collective and high-stakes.
- It explains the framing and risk attitude but not how a particular frame is selected.
- Translating its parameters into observational IR settings is rarely precise.
Common pitfalls
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Applications
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Frequently asked
What is the central prediction of prospect theory for foreign policy?
That leaders are risk-averse when they see themselves choosing among gains but risk-seeking when they see themselves facing losses. Because outcomes are judged relative to a reference point and losses loom larger than gains, leaders often accept reckless risks to avoid or recover losses — defending the status quo or gambling for resurrection far more aggressively than expected-utility theory would predict.
Why is the reference point so important and so contested?
Because whether an outcome counts as a gain or a loss — and thus whether the leader is risk-averse or risk-seeking — depends entirely on it. Yet reference points are not directly observable and can shift with expectations and framing. If the analyst infers the reference point from the behavior being explained, the account becomes circular. Establishing the reference point independently (from prior statements, expectations, or the status quo) is the method's central methodological challenge.
How does prospect theory relate to expected-utility models of war?
They are competing accounts of choice under risk. Expected-utility models assume leaders maximize the probability-weighted value of final outcomes; prospect theory replaces this with reference dependence, loss aversion, and nonlinear probability weighting. Where expected-utility theory predicts consistent risk attitudes, prospect theory predicts they flip between gain and loss domains, better matching observed risk-seeking in defeat or decline.
Sources
- 1.Levy, J. S. (1997). Prospect theory, rational choice, and international relations. International Studies Quarterly, 41(1), 87–112.
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Cite this page
ScholarGate. (2026, June 22). Prospect Theory in International Relations. ScholarGate. https://scholargate.app/international-relations/prospect-theory-ir