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Prenatal cocaine exposure (PCE) and child impulsivity can lead to attention-deficit/hyperactivity disorder (ADHD). Early screening and interventions for children with PCE are recommended to mitigate ADHD risks.

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Area of Science:

  • Pediatric neurology
  • Child psychology
  • Developmental toxicology

Background:

  • Attention-deficit/hyperactivity disorder (ADHD) is a common childhood behavioral issue.
  • Prenatal substance exposure is a known risk factor for ADHD.

Purpose of the Study:

  • To determine ADHD rates in children with prenatal cocaine exposure (PCE) versus non-exposed children.
  • To examine associations between ADHD and infant/maternal factors, and identify mediating factors.
  • To investigate the role of child impulsivity and attention problems as mediators.

Main Methods:

  • Secondary analysis of the Maternal Lifestyle Study data.
  • ADHD diagnosis using the NIMH DISC at ages 11 or 14.
  • PCE as the primary exposure; infant/maternal characteristics and caretaker psychopathology as independent variables.
  • Child impulsivity (age 4) and attention problems (age 5) evaluated as mediators.

Main Results:

  • PCE effects on ADHD were mediated by attention problems at age 5.
  • Child impulsivity mediated the relationship between PCE and ADHD.
  • Male sex showed a direct association with ADHD.

Conclusions:

  • Early screening for ADHD is advised for children with PCE or other risk factors.
  • Early childhood behavioral interventions may reduce ADHD diagnosis or severity.
  • Attention problems and impulsivity are key mediators in the pathway from risk factors to ADHD.