High social cost' adults can be predicted from as young as three, says study
"A small fraction of the population is likely to account for the majority of societal costs, according to new research into the impact of childhood disadvantage on later life.
The research based on New Zealand data but involving an international team also revealed that such high cost adults can be predicted when as young as three years old from an assessment of their brain health.
The study, which followed around 1,000 children from birth, found that at 38 years of age just 22% of the group accounted for 81% of its criminal convictions, 78% of pharmaceutical prescriptions, and 66% of welfare benefits.
About 20% of the population is using the lions share of a wide array of public services and we found that the same people use most of the national health service, the criminal courts, insurance claims for disabling injury, pharmaceutical prescriptions and social welfare benefits, said Terrie Moffitt, co-author of the research from Duke University, North Carolina."
https://www.theguardian.com/science/2016/dec/12/high-social-cost-adults-can-be-identified-from-as-young-as-three-says-study
This is the embodiment of the 20%, 80% rule (20% of people do 80% of anything). Plus IQ, socioeconomic level, self control plus level of abuse drives life outcome over populations.