Data were analyzed from a population-based, longitudinal sample of 8,650 U.S. children to (a) identify factors associated with or predictive of oral vocabulary size at 24 months of age and (b) evaluate whether oral vocabulary size is uniquely predictive of academic and behavioral functioning at kindergarten entry. Children from higher…

Internalizing symptoms (withdrawn/depressed and anxious/depressed), measured by the Child Behavior Checklist (CBCL), were examined as related to the development of externalizing problems, a pathway to risky behavior. A cross-section of children ages 6 to 15 was drawn from the National Institute of Child Health and Human Development's (NICHD) Study…

To help predict physical, mental, and social behavior problems in school age children, this longitudinal study intended to identify the origins of dysfunction and the characteristics which put infants at high risk for future problems. The study provided background data for the development of an operational screening and assessment method. The…