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Genotype and neuropsychological response inhibition as resilience promoters for attention-deficit/hyperactivity disorder, oppositional defiant disorder, and conduct disorder under conditions of psychosocial adversity
Journal article   Peer reviewed

Genotype and neuropsychological response inhibition as resilience promoters for attention-deficit/hyperactivity disorder, oppositional defiant disorder, and conduct disorder under conditions of psychosocial adversity

Joel Nigg, Molly Nikolas, Karen Friderici, Leeyoung Park and Robert A Zucker
Development and psychopathology, Vol.19(3), pp.767-786
2007
DOI: 10.1017/S0954579407000387
PMCID: PMC2291356
PMID: 17705902

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Abstract

Whereas child personality, IQ, and family factors have been identified as enabling a resilient response to psychosocial adversity, more direct biological resilience factors have been less well delineated. This is particularly so for child attention-deficit/hyperactivity disorder (ADHD), which has received less attention from a resilience perspective than have associated externalizing disorders. Children from two independent samples were classified as resilient if they avoided developing ADHD, oppositional defiant disorder (ODD), or conduct disorder (CD) in the face of family adversity. Two protective factors were examined for their potential relevance to prefrontal brain development: neuropsychological response inhibition, as assessed by the Stop task, and a composite catecholamine genotype risk score. Resilient children were characterized in both samples by more effective response inhibition, although the effect in the second sample was very small. Genotype was measured in Sample 1, and a composite high risk genotype index was developed by summing presence of risk across markers on three genes expressed in prefrontal cortex: dopamine transporter, dopamine D4 receptor, and noradrenergic alpha-2 receptor. Genotype was a reliable resilience indicator against development of ADHD and CD, but not ODD, in the face of psychosocial adversity. Results illustrate potential neurobiological protective factors related to development of prefrontal cortex that may enable children to avoid developing ADHD and CD in the presence of psychosocial adversity.
Attention Deficit and Disruptive Behavior Disorders - diagnosis Attention Deficit and Disruptive Behavior Disorders - epidemiology Attention Deficit Disorder with Hyperactivity - epidemiology Attention Deficit Disorder with Hyperactivity - genetics Child Cognition Disorders - diagnosis Cognition Disorders - epidemiology Conduct Disorder - diagnosis Conduct Disorder - epidemiology Dopamine Plasma Membrane Transport Proteins - genetics Family - psychology Female Genotype Humans Male Marriage - psychology Neuropsychological Tests Polymerase Chain Reaction Psychology Receptors, Dopamine D4 - genetics Social Environment

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