Resumen de Infant Pathways to Externalizing Behavior: Evidence of Genotype × Environment Interaction
Leslie D. Leve, David C. R. Kerr, Daniel Shaw, Xiaojia Ge, Jenae M. Neiderhiser, Laura V. Scaramella, John B. Reid, Rand D. Conger, David Reiss
To further the understanding of the effects of early experiences, 9-month-old infants were observed during a frustration task. The analytical sample was composed of 348 linked triads of participants (adoptive parents, adopted child, and birth parent[s]) from a prospective adoption study. It was hypothesized that genetic risk for externalizing problems and affect dysregulation in the adoptive parents would independently and interactively predict a known precursor to externalizing problems: heightened infant attention to frustrating events. Results supported the moderation hypotheses involving adoptive mother affect dysregulation: Infants at genetic risk showed heightened attention to frustrating events only when the adoptive mother had higher levels of anxious and depressive symptoms. The Genotype × Environment interaction pattern held when substance use during pregnancy was considered.
