A gradient of childhood self-control predicts health, wealth, and public safety.
Level 3 - non-randomized controlled study
Prospective longitudinal cohort study with an additional sibling-comparison cohort
PubMed 21262822 · doi:10.1073/pnas.1010076108
What was done
Researchers tracked a prospective birth cohort of 1,000 children from birth to age 32 years to examine whether childhood self-control predicted adult physical health, substance dependence, personal finances, and criminal offending. The analysis controlled for intelligence, social class, and adolescent mistakes. A separate cohort of 500 sibling pairs was also evaluated to account for shared family background.
What was found
Childhood self-control predicted physical health, substance dependence, personal finances, and criminal offending outcomes in a gradient pattern. In the sibling cohort, the sibling with lower self-control experienced poorer adult outcomes. Specific numerical effect sizes and statistical metrics were not provided in the abstract.
Why it matters
This longitudinal study indicates that childhood self-control has a persistent, independent association with major adult health, economic, and legal outcomes beyond intelligence and socioeconomic status.
Limits
The abstract reports no numerical estimates, effect sizes, or confidence intervals. As an observational study, residual confounding remains possible, and details regarding attrition and demographic characteristics are not reported in the abstract.