Correction to: Behavior Genetics (2020) 50:247–262 https://doi.org/10.1007/s10519-020-10006-y

There is an error in the references for the measure of child ADHD symptoms at age 6 years.

Note that Child ADHD symptoms were assessed using items from the Conners' Abbreviated Parent Questionnaire (Conners 1973) & items from the Revised DuPaul Child ADHD Rating Scale (DuPaul 1991; Thapar et al. 2000).