S7 Ep48: NOBEL SPECIAL: James Robinson on antisocial norms

Episode Summary

Executive Summary: James Robinson discusses a paper on Colombia’s antisocial norm of avoiding “snitching” (“don’t be a toad/sapo”), showing that in dictator-game experiments this norm undermines third-party punishment and fair outcomes. He argues the norm is widely seen as undesirable but still used in equilibrium, likely shaped by conflict history and weak state enforcement, with policy lessons favoring stronger formal institutions over norm lectures.

Main Topics: What social norms are and where they come from (Priority: 5/5): Robinson defines social norms as unwritten rules governing acceptable behavior and argues their origins are understudied, often emerging from historical and cultural contexts and sometimes becoming formalized in laws. Antisocial norms in Colombia (Priority: 5/5): The episode centers on Colombia’s “don’t be a toad/sapo” norm, which discourages informing on others and appears unusually prevalent and socially consequential compared with similar norms elsewhere. Dictator game and third-party punishment (Priority: 5/5): The study uses an experimental dictator game with a punishing third party to test whether invoking the sapo norm weakens fairness enforcement and generosity. Normative beliefs versus equilibrium behavior (Priority: 5/5): Robinson emphasizes that participants generally think fairness and punishment of unfairness are appropriate, but still believe punished people will label enforcers as sapos, creating a bad equilibrium they don’t endorse. Historical violence and intergenerational transmission (Priority: 4/5): The team links contemporary responses to the sapo norm with family histories of La Violencia, suggesting conflict-era experiences may shape present-day behavior and sensitivity to anti-snitching norms. Policy implications: formal institutions matter (Priority: 5/5): The conclusion is that changing attitudes alone is insufficient; reducing the incentive to invoke antisocial norms likely requires stronger law enforcement and better functioning state institutions.

Key Arguments: Social norms are crucial informal institutions, especially in developing countries, but are far less studied than formal rules like constitutions and laws. In Colombia, anti-snitching norms are not occasional but repeatedly invoked in everyday life, making them a distinctive and important social force. The dictator-game design shows that adding a sapo-style accusation can completely unravel third-party punishment and pro-social outcomes. Participants’ beliefs reveal cognitive dissonance: they judge the norm as inappropriate yet expect others to use it, sustaining the equilibrium. Historical conflict in Colombia, especially La Violencia, appears correlated with modern experimental behavior, suggesting long-run social transmission of violence and mistrust. Antisocial norms persist less because people approve of them and more because institutions and incentives make invoking them advantageous. The best way to weaken such norms is not merely persuasion but improving formal enforcement so that relying on the norm becomes less useful.

Data Points: Nobel Prize year: 2024 - Intro notes James Robinson as one of the winners of the 2024 Nobel Prize in Economics. Years in Colombia: 32 years - Robinson says he has been doing work and spending time in Colombia for 32 years. Paper number: Discussion paper 19519 - Referenced at the end as the CEPR discussion paper on antisocial norms. Historical conflict start year: 1948 - La Violencia is described as beginning after conflict between Liberal and Conservative parties in 1948. Experimental context: Students in Bogotá - The dictator-game experiment was run with university students in Bogotá. Normative belief result: Majority - Robinson says a majority think fairness/punishment is appropriate, but also believe punished people will call the enforcer a sapo. Survey method: Telephone follow-up survey - Researchers used students’ phone numbers to survey family history of victimization and displacement.

Pivotal Quotes: "“an unformal, unwritten rule that guides normal or acceptable behaviour in a community or a society”" — James Robinson: Definition of social norms. "“once you allow the Colombian students to invoke these social norms, the pro-social equilibrium unravels”" — James Robinson: Summary of the experimental finding on the dictator game. "“what you really have to do is make it less attractive to appeal to these norms”" — James Robinson: Policy takeaway on reducing antisocial norms.

Implications: The episode suggests antisocial norms can persist even when people dislike them, so changing behavior likely requires stronger institutions, not just moral appeals. It also shows how conflict legacies can shape present-day cooperation and punishment.