Correlates and predictors of hyperactivity and aggression: A longitudinal study of parent-referred problem preschoolers

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Abstract
Forty-six parent-referred problem 3-year-olds and 22 comparison children were assessed with parent report and observational measures; 54 were followed up at age 4, and 53 were followed again at age 6. Lower social class and greater family stress were associated with higher symptom ratings at initial referral and age 6 follow-up. Negative and directive maternal behavior and negative and noncompliant child behavior observed in the lab at age 3 were associated with higher maternal ratings of child aggression and hyperactivity; these observed behaviors continued to be highly predictive of maternal ratings of persistent problems at ages 4 and 6. A laboratory index of inattention and overactivity at intake also predicted hyperactivity ratings at age 6. These findings suggest that externalizing problems identified in early childhood are likely to persist when they are associated with more family disruption and a negative mother-child relationship.