BackgroundObsessive-compulsive disorder (OCD) is a psychiatric disorder with multiple
symptom dimensions (eg contamination, symmetry). OCD clusters in families and decades …

Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder with a
complex symptomatology, and core symptoms as well as functional impairment often persist …

Behaviors and disorders related to self-regulation, such as substance use, antisocial
behavior and attention-deficit/hyperactivity disorder, are collectively referred to as …

Autism spectrum disorder (ASD) is a highly heritable and heterogeneous group of
neurodevelopmental phenotypes diagnosed in more than 1% of children. Common genetic …

Background Attention-deficit/hyperactivity disorder (ADHD) is among the most common
psychiatric disorders of childhood that often persists into adulthood and old age. Yet ADHD …

Attention deficit/hyperactivity disorder (ADHD) is a highly heritable childhood behavioral
disorder affecting 5% of children and 2.5% of adults. Common genetic variants contribute …

Depression is a polygenic trait that causes extensive periods of disability. Previous genetic
studies have identified common risk variants which have progressively increased in number …

Reading and writing are crucial life skills but roughly one in ten children are affected by
dyslexia, which can persist into adulthood. Family studies of dyslexia suggest heritability up …

ADHD is a psychiatric disorder which is characterized by hyperactivity, impulsivity and
attention problems. Due to recent findings of microbial involvement in other psychiatric …

Major depressive disorder (MDD) is a common illness accompanied by considerable
morbidity, mortality, costs, and heightened risk of suicide. We conducted a genome-wide …