Teens With More Unstructured Free Time More Likely To Have Broken The Law, 21-Country Study Finds

Study Finds Surprising Predictor of Teen Crime

Teenagers who spend more of their free time hanging out unsupervised (around the local town, at parties, skipping class, etc) are more likely to have broken the law, according to a sweeping international study of more than 58,000 adolescents in urban samples across 21 countries. Published in PLoS ONE, the research found that this kind of unstructured free time is among the most consistent correlates of whether a teenager reports involvement in crime. The link was stronger than several other factors examined, including weak parental supervision and poor moral reasoning, and was second only to having delinquent friends.

Researchers surveyed 58,425 young people between the ages of 13 and 17, drawn from urban areas in countries across Europe, North America, and South America. Participants reported how they spent their time and what they had done in the past 12 months that might qualify as criminal behavior, along with a range of personal and family factors. That pattern held up across nearly every country studied, from Sweden to Venezuela, regardless of how much crime a country saw overall.

Structured time at home (activities like doing homework, looking for information online for school, or sharing meals with family) told a different story. That kind of routine time was tied to lower rates of criminal behavior, almost like a counterweight to the idle hours on the street.

Classrooms From Argentina to Iceland Provided the Data

Data came from the International Self-Report Delinquency Study 4, a large research effort spanning schools in Argentina, Austria, Bosnia and Herzegovina, Brazil, Colombia, Czech Republic, Denmark, Estonia, Finland, Iceland, Lithuania, Mexico, Norway, Poland, Slovenia, Spain, Sweden, Switzerland, the United Kingdom, the United States, and Venezuela. Surveys ran between January 2021 and May 2024 in classrooms, mostly on computers, with the average country contributing close to 2,800 student responses.

Researchers asked teens to self-report any involvement in acts including vandalism, shoplifting, vehicle theft, violence such as robbery and assault, drug dealing, and online crimes such as hacking. Time use was sorted into three groups: unstructured time outside the home (hanging around on streets or in shopping centers, going to evening parties, skipping school), unstructured time at home (playing online games, browsing social media, visiting adult websites, or gambling online), and structured time at home (doing homework, studying, eating meals with family). On average, teens spent about 0.7 hours per day on unstructured out-of-home activities, 6.0 hours on unstructured at-home activities, and 3.6 hours on structured at-home activities.

High-Frequency Offenders Reported Far More Unstructured Free Time

When researchers compared teens who reported no criminal behavior against those who did, the differences in how they spent their time were clear. Non-offending teens reported spending an average of 6.4 hours daily in unstructured activities overall. Low-frequency offenders averaged 7.5 hours, and high-frequency offenders averaged 8.8 hours. In every country studied, teens who committed crimes at a high rate reported significantly more unstructured free time than those who committed no crimes at all.

After accounting for other factors, including self-control, parental monitoring, delinquent friends, and exposure to crime in a teen’s environment, unstructured out-of-home free time still stood out. It beat out parental supervision and a teen’s own sense of right and wrong as a signal of who was more likely to offend, and it matched self-control, a trait psychologists usually treat as one of the biggest predictors of criminal behavior. Only one thing beat it: having friends who also broke the law. Structured time at home told the opposite story, tied to lower rates of both committing crimes and repeating them.

Cutting Unstructured Time Could Lower Teen Crime Rates, Model Suggests

Researchers ran simulation analyses to estimate what might happen if teens shifted even a small amount of their unstructured outside time toward other activities. A 10% reduction in unstructured out-of-home time was projected to be associated with an average 5% drop in the share of teens committing any crime, and a 20% reduction was projected to be associated with roughly a 9.6% drop. The researchers were careful to note that the study design does not allow for definitive cause-and-effect conclusions. It is possible that teens already inclined toward crime are simply more drawn to unstructured settings in the first place. Still, the pattern held up in nearly every one of the 21 countries, even after accounting for a long list of other explanations, which is why the researchers see it as a signal worth taking seriously rather than a coincidence tied to any one country’s culture.

From a practical standpoint, the authors suggest that expanding access to structured, supervised, and meaningful activities for teenagers could represent a promising direction for crime prevention, though they note the idea still needs testing through stronger research designs. That could mean more after-school programs, community sports and arts initiatives, mentoring programs, or simply more family meal time at home. Cutting teenagers off from independence or outdoor freedom entirely is not the goal, the researchers emphasize, but giving teens more structured, purposeful options to choose from.

Teenagers don’t need less freedom, based on these findings. They need more to do with it. A few structured hours at home, whether that’s homework, dinner with family, or a hobby with a goal attached, seem to matter just as much as who’s watching them.

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Disclaimer: This article describes an association identified through survey research, not a proven cause-and-effect relationship. The study relied on self-reported data from students in urban areas and does not represent all teenagers in the countries studied.

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