Association between the dopamine transporter gene (DAT1) and attention deficit hyperactivity disorder-related traits in healthy adults.

Background: The dopamine transporter gene (DAT1) is an established genetic risk factor for attention deficit hyperactivity disorder (ADHD). Therefore, we hypothesized that DAT1 may also influence the manifestation of ADHD-related traits in the normal population.

Methods: A quantitative association study was carried out on 1289 healthy adults.