The two studies that assessed interactions of DAT1 with birth weight reported nominally significant effects on the occurrence of conduct problems in children with ADHD in a case-only study (Langley et al., 2008 ) and significant G × E effects for a genetic index including DAT1, DRD4 , and DRD2 and birth weight on ADHD symptoms in a sibling sample (Jackson and Beaver, 2015 ).
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The Interplay Between Prenatal Adversity, Offspring Dopaminergic Genes, and Early Parenting on Toddler Attentional Function.
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