Childhood neurodevelopmental disorders and violent criminality: a sibling control study.

Lundström et al. (2014) tracked thousands of Swedish brothers and sisters. They asked which kids later got charged with violent crimes.

Each child with ADHD, autism, Tourette, or OCD was matched with a sibling who did not have the diagnosis. This design cancels out family poverty, parenting style, or neighborhood crime.

ADHD and tic disorders raised the risk of later violent crime. Autism and OCD did not.

The autism result stayed null even when the child also had low IQ or other diagnoses.

Green et al. (2020) also compared autism and ADHD kids, but looked at math scores instead of crime. Both groups fell behind at the same rate, showing the diagnoses often move together in school data.

Sievers et al. (2020) found that being born early raises the chance of later ADHD or autism diagnosis. Sebastian’s team shows that for crime risk, only the ADHD part of that pair matters.

Bromley et al. (1998) followed autistic children with intellectual disability and saw heavy use of antipsychotics. Sebastian adds that these clients are not more likely to offend as adults, calming a common fear.

You can now tell families, funders, and police that an autism diagnosis alone is not a red flag for future violence. Focus safety planning on the small subgroup who also show clear conduct problems, not on the label itself. When you write behavior plans, keep goals strengths-based rather than risk-obsessed.