Disobedience and deceitfulness emerge as key links in children’s conduct problems

A cross-country study suggests children’s conduct problems share broadly similar patterns across sex and nationality, but certain behaviours may be especially important in understanding the condition.

Children with conduct problems do not all look the same, and that matters for how families and clinicians understand the behaviour. A review on the National Elf Service website of a 2026 study by María Álvarez-Voces and colleagues says the researchers used a network approach to examine how conduct problem symptoms and callous-unemotional traits fit together in children from the United States and Spain. The condition can include aggression, rule-breaking, deceitfulness and irritability, and when symptoms are severe enough they may meet criteria for conduct disorder, a diagnosis linked with substantial social and educational harm, according to Cleveland Clinic and Johns Hopkins Medicine.

The study drew on four large population samples of children aged eight to 14, including the Adolescent Brain Cognitive Development study in the US and the ELISA project in Spain. Using parent reports, the researchers compared boys and girls and also looked at whether symptoms clustered differently across countries. The National Elf Service summary says boys showed slightly higher levels of conduct problems and callous-unemotional traits than girls in both countries, but the differences were modest rather than dramatic.

The most striking finding was not that boys and girls were fundamentally different, but that the symptom patterns were broadly similar across sex and country. The researchers found that callous-unemotional traits were more tightly linked to one another than conduct problem symptoms were, while disobedience and deceitfulness stood out as especially important conduct-related features. Relational aggression appeared more central among girls, while property destruction and theft played a larger role in the US samples. Lack of guilt emerged as a key bridge between the two clusters, suggesting it may be one of the clearest links between conduct problems and callous-unemotional traits when the shorter trait measure was used.

Those findings fit a wider clinical understanding of conduct disorder and callous-unemotional traits. Conduct disorder is often described as a pattern of aggressive, antisocial or seriously rule-breaking behaviour, and treatment usually centres on psychotherapy, with medication sometimes used to help manage symptoms, according to Cleveland Clinic, Johns Hopkins Medicine and general clinical summaries from Healthline and the US National Library of Medicine. Callous-unemotional traits, meanwhile, are associated with reduced empathy, guilt and prosocial behaviour, and previous research has linked them to a higher risk of later antisocial outcomes.

The study has important strengths, including its large community samples, its comparison of two countries and its careful handling of measurement issues. But the National Elf Service review also notes clear limits: the children were not diagnosed cases, most participants were white, and the results were based on parent reports rather than direct clinical interviews. Because the analysis was cross-sectional, it cannot show that one symptom causes another. Even so, the work adds weight to the idea that conduct problems should not be treated as a single, uniform condition. Instead, the pattern of symptoms may matter as much as the diagnosis itself, which could eventually help researchers design more targeted interventions for children and young people.