Original title: Perceived punitive consequences and adolescent violent crime: The moderating role of socio-legal legitimacy in a Brazilian birth cohort
Andreas Bauer, Justice Tankebe, Thaís Martins-Silva, Alicia Matijasevich +4 · September 2026
Why do teens commit violent crime, and what stops them? Most studies look at rich countries, but this paper studied teenagers in Brazil. Researchers tracked 1,510 youth to see how fear of punishment and belief in legitimacy—the idea that authorities are fair and should be obeyed—affect violent behavior at ages 15 and 18. They looked at trust in the police, the law, and the social system. At age 15, fearing punishment and trusting any of the three reduced violent crime. At age 18, only fearing punishment and trusting the police lowered crime. Also, at age 15, fearing punishment worked best to deter teens who saw the law and society as unfair.
Imagine you're a teenager deciding whether to sneak out past your curfew. You weigh two things: how likely you are to get caught, and whether the rule feels fair. Now suppose fairness only matters when you're younger—at 15, a fair rule actually stops you, but by 18, only the risk of being caught keeps you home. Here, the curfew is the law, the fairness is how legitimate teens find police and society, and the risk of getting caught is the perceived punishment. The same age shift appears in a Brazilian study of violent crime.
In high-violence countries, keeping teenagers from committing violent crimes is a daily struggle. This study shows that both fear of punishment and trust in police, law, and society cut violence—but only trust in police still matters at 18. Prevention programs should therefore build legitimacy early, then focus on police trust as teens age.
The abstract doesn't say. It reports associations, not causes, and follows one cohort in a single Brazilian city, so findings may not generalize. It also leaves out how violent crime was measured—whether by self-reports or official records.
Ask anything about this paper. Answers come from its abstract, and say so when the abstract doesn't cover your question.
Perceived punitive consequences and adolescent violent crime: The moderating role of socio-legal legitimacy in a Brazilian birth cohort — Andreas Bauer, Justice Tankebe, Thaís Martins-Silva et al. — PsyArXiv — doi:10.31234/osf.io/q4mzx_v2
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper. This is a preprint, so it hasn't necessarily been peer reviewed.