Autism Spectrum Disorder (ASD) is one of the most prevalent neurodevelopmental
disorders, affecting an estimated 1 in 59 children. ASD is highly genetically heterogeneous …

Decades of research show that genes play an vital role in the etiology of attention deficit
hyperactivity disorder (ADHD) and its comorbidity with other disorders. Family, twin, and …

Neurodevelopmental disorders such as attention deficit hyperactivity disorder (ADHD) and
autism spectrum disorder, although most commonly considered in childhood, can be lifelong …

Executive dysfunction has been shown to be a promising endophenotype in
neurodevelopmental disorders such as autism spectrum disorder (ASD) and attention …

Most psychiatric disorders are moderately to highly heritable. The degree to which genetic
variation is unique to individual disorders or shared across disorders is unclear. To examine …

BACKGROUND: Findings from family and twin studies suggest that genetic contributions to
psychiatric disorders do not in all cases map to present diagnostic categories. We aimed to …

Background: Attention deficit hyperactivity disorder (ADHD) and its possible causes still
attract controversy. Genes, pre and perinatal risks, psychosocial factors and environmental …

Background Attention deficit hyperactivity disorder (ADHD) is among the most common
psychiatric disorders of childhood that persists into adulthood in the majority of cases. The …

The heterogeneous clinical presentations of individuals with autism spectrum disorders
(ASDs) poses a significant challenge for sample characterization and limits the …

Researchers continue to pursue a better understanding of the symptoms, comorbidities, and
causes of autism spectrum disorders. In this article we review more than 30 twin studies of …