['Clinically, attention-deficit/hyperactivity disorder (ADHD) is characterized by hyperactivity, impulsivity, and inattention and is among the most common childhood disorders. These same traits that define ADHD are variable in the general population, and the clinical diagnosis may represent the extreme end of a continuous distribution of inattentive and hyperactive behaviors. This hypothesis can be tested by assessing the predictive value of polygenic risk scores derived from a discovery sample of ADHD patients in a target sample from the general population with continuous scores of inattention and hyperactivity. In addition, the genetic overlap between ADHD and continuous ADHD scores can be tested across rater and age.', 'The Psychiatric Genomics Consortium has performed the largest genome-wide analysis (GWA) study of ADHD so far, including 5,621 clinical patients and\xa013,589 controls. The effects sizes of single nucleotide polymorphisms (SNPs) estimated in\xa0this meta-analysis were used to obtain individual polygenic risk scores in an independent\xa0population-based cohort of 2,437 children from the Netherlands Twin Register. The variance explained in Attention Problems (AP) scale scores by the polygenic risk scores was\xa0estimated by\xa0linear mixed modeling.', 'The ADHD polygenic risk scores significantly predicted both parent and teacher ratings of AP in preschool- and school-aged children.'] Do attention-deficit/hyperactivity disorder polygenic risk scores predict attention problems in a population-based sample of children?