Unstructured free time linked to increased youth delinquency across 21 countries, study finds

Research involving over 58,000 teenagers from 21 nations reveals that unsupervised leisure activities outside the home significantly correlate with youth offending and victimisation, raising questions about community-based prevention strategies.

A study of more than 58,000 teenagers across 21 countries suggests that how young people spend their spare time may be a major factor in delinquency and exposure to violence. Published in PLOS ONE, the research found that unstructured free time, especially outside the home and away from adult supervision, was consistently linked with offending and victimisation, although association with delinquent peers remained the strongest predictor overall.

The paper drew on anonymous questionnaire data from 13- to 17-year-olds in Europe, North America and South America, including about 1,900 students in Brazil. Researchers used self-reported delinquency measures rather than police records, a method they say captures behaviour that often never appears in official statistics. Marina Rezende Bazon of the University of São Paulo, who coordinated the Brazilian team, said the study shows unstructured free time is a key variable for understanding adolescents’ involvement in violence.

Bazon said the pattern was visible in two settings: time spent at home, which often meant unsupervised internet use, and time spent outside the home, such as hanging out in streets, neighbourhoods or public places. The researchers also found a notable rise in online offending among girls, particularly behaviour linked to other people’s appearance, and said girls were more likely than boys to fall into the victim-aggressor overlap, a group marked by worse mental health, family and school problems. Previous research cited by the authors has similarly linked unstructured socialising with delinquency and with exposure to community violence.

The study also points to a broader policy challenge. Because the sample covered only school-attending adolescents, the most vulnerable young people may be undercounted, especially those who have dropped out or are outside formal institutions. The authors argue that modest reductions in unstructured out-of-home time could be associated with lower offending, while warning that online leisure is more complex than a simple risk factor. They say prevention should focus on better community-based sport, cultural and educational options, along with digital literacy, parental mediation and platform accountability, rather than merely trying to keep teenagers busy.