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Prenatal drug exposure and executive function in early adolescence
Natalia Karpova1, Dake Zhang2, Anna Malia Beckwith3
1Rutgers Robert Wood Johnson Medical School, Institute for the Study of Child Development, Department of Pediatrics, 89 French Street, New Brunswick, NJ 08901, United States.
Neurotoxicology and Teratology
|October 14, 2021
Summary
Prenatal cocaine exposure (PCE) combined with high environmental risk significantly impairs executive function in adolescent males. These findings highlight the critical role of sex and environment in moderating PCE effects on cognitive development.
Area of Science:
- Neuroscience
- Developmental Psychology
- Child Health
Background:
- Prenatal cocaine exposure (PCE) effects on executive function (EF) remain unclear.
- Early life environmental factors and biological sex may influence cognitive outcomes.
- Understanding these interactions is crucial for targeted interventions.
Purpose of the Study:
- To investigate the predictive relationship between PCE, biological sex, and environmental risk on adolescent EF.
- To explore potential three-way interactions among these factors.
- To clarify inconsistent findings in previous research.
Main Methods:
- Prospective longitudinal study of 135 adolescents followed from birth.
- Assessment of EF using the Tower of Hanoi (ToH) puzzle with increasing complexity.
- Survival analysis to identify predictors of puzzle completion success.
Main Results:
- Increased puzzle difficulty led to decreased completion rates.
- Adolescents with high environmental risk and prenatal alcohol or cannabis exposure performed worse.
- A significant three-way interaction revealed that cocaine-exposed males in high-risk environments had the poorest EF (p < .01).
Conclusions:
- Males exposed to cocaine prenatally appear particularly vulnerable to executive function deficits.
- Adolescent sex and environmental risk significantly moderate the impact of PCE on cognitive outcomes.
- These factors are critical considerations for understanding and mitigating the long-term effects of PCE.
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