Peer Problems and Hyperactivity-Impulsivity Among Norwegian and American Children: The Role of 5-HTTLPR.

• Autores: Frode Stenseng, Zhi Li, Jay Belsky, Beate W. Hygen, Věra Skalická, Ismail C. Guzey, Lars Wichstrøm
• Localización: Child development, ISSN 0009-3920, Vol. 89, Nº. 2, 2018, págs. 509-524
• Idioma: inglés
• DOI: 10.1111/cdev.12766
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• Resumen

  • Peer problems are linked to attention deficit hyperactivity disorder (ADHD) symptoms and the serotonin system is thought to be involved in ADHD-related behavior. Hence, from a Gene × Environment perspective, the serotonin transporter 5-HTTLPR may play a moderating role. In two large community samples, the moderating role of 5-HTTLPR was examined related to more hyperactivity-impulsivity symptoms (HI symptoms) predicted by more peer problems. In Study 1, involving 642 Norwegian children, results indicated that for s-allele carriers only, caregiver-reported peer problems at age 4 predicted more parent-reported HI symptoms at age 6. In Study 2, similar results emerged involving 482 American children. Discussion focuses on differential sensitivity to the adverse effects of poor peer relations. [ABSTRACT FROM AUTHOR]