Focal Point (Game Theory)

Schelling's idea

Schelling (1957, 1960) focused on pure coordination problems. He asked students where and when they would go if they had to meet someone in New York the next day without having agreed on a place or time, and many chose the information booth at Grand Central Station at noon. In problems such as calling heads or tails or naming any number, people also converged on the same answer at high rates without communication. Schelling explained that such solutions are chosen not because they are logically superior but because their prominence or uniqueness leads each party to expect the other to choose them. He extended the idea to bargaining and limited war, arguing that qualitative distinctions such as a river boundary or the line between using and not using nuclear weapons serve as the basis for tacit agreement.

Theoretical interpretations

Building on Schelling, Lewis (1969) defined a convention as a regularity in recurring coordination problems sustained by people's expectations of one another. Because standard game theory cannot say which of several Nash equilibria will be chosen, explaining focal points became a long-standing challenge. Sugden (1995) proposed a theory in which focal points arise from shared frames and labels by which people describe options. Bacharach (2006) explained focal points through team reasoning, in which people ask "what should we do?" rather than "what should I do?". Cognitive hierarchy theory instead explains them through beliefs about how many steps of reasoning others perform; comparing the two experimentally, Bardsley and colleagues (2010) reported that team reasoning has considerable explanatory power.

Experimental evidence and applications

Mehta, Starmer and Sugden (1994) showed that when participants were rewarded for matching a partner's answer, they converged on the same answer far more often than when they simply picked answers they liked. This was read as evidence that people seek shared salience rather than personal preference. Crawford, Gneezy and Rottenstreich (2008), however, reported that even slight payoff asymmetries between options can sharply weaken focal points and produce coordination failure. Camerer (2003) placed these experiments within behavioral game theory. In applied work, Garrett and Weingast (1993) argued that ideas such as mutual recognition acted as focal points in building the European single market, and McAdams (2015) argued that law can change behavior even without sanctions by providing reference points for coordination. Myerson (2009) revisited the influence of Schelling's insights on modern game theory and institutional research. The concept is used alongside game theory and deterrence theory to understand strategic interaction.

FAQ

What is a focal point in simple terms?

When you lose contact with a friend and must meet in a large park, you might both think of the main gate. A focal point is that kind of salient, natural choice that people converge on by relying on each other's expectations.

How are focal points related to Nash equilibrium?

Coordination games can have several Nash equilibria, and the mathematics of game theory alone cannot easily say which will be chosen. Focal points explain how context such as culture, wording and shared experience makes one equilibrium stand out and guides the choice.

Sources reviewed: 2026-10-26

References

1. Schelling, T. C. (1957). Bargaining, communication, and limited war. Journal of Conflict Resolution, 1(1), 19–36.
2. Schelling, T. C. (1960). The Strategy of Conflict. Cambridge, MA: Harvard University Press.
3. Lewis, D. K. (1969). Convention: A Philosophical Study. Cambridge, MA: Harvard University Press.
4. Sugden, R. (1995). A theory of focal points. Economic Journal, 105(430), 533–550.
5. Mehta, J., Starmer, C., & Sugden, R. (1994). The nature of salience: An experimental investigation of pure coordination games. American Economic Review, 84(3), 658–673.
6. Bacharach, M. (2006). Beyond Individual Choice: Teams and Frames in Game Theory. Princeton: Princeton University Press.
7. Bardsley, N., Mehta, J., Starmer, C., & Sugden, R. (2010). Explaining focal points: Cognitive hierarchy theory versus team reasoning. Economic Journal, 120(543), 40–79.
8. Crawford, V. P., Gneezy, U., & Rottenstreich, Y. (2008). The power of focal points is limited: Even minute payoff asymmetry may yield large coordination failures. American Economic Review, 98(4), 1443–1458.
9. Camerer, C. F. (2003). Behavioral Game Theory: Experiments in Strategic Interaction. Princeton: Princeton University Press.
10. Garrett, G., & Weingast, B. R. (1993). Ideas, interests, and institutions: Constructing the European Community's internal market. In J. Goldstein & R. O. Keohane (Eds.), Ideas and Foreign Policy (pp. 173–206). Ithaca: Cornell University Press.
11. Myerson, R. B. (2009). Learning from Schelling's Strategy of Conflict. Journal of Economic Literature, 47(4), 1109–1125.
12. McAdams, R. H. (2015). The Expressive Powers of Law: Theories and Limits. Cambridge, MA: Harvard University Press.