Complex genetic traits refer to those phenotypes not fitting patterns of Mendelian
segregation and/or assortment but exhibiting a preferential familial clustering that cannot be …

Objective Clinically, attention-deficit/hyperactivity disorder (ADHD) is characterized by
hyperactivity, impulsivity, and inattention and is among the most common childhood …

Using data based on self-, parent, and teacher reports, we assessed various aspects of
psychopathology in a large sample of control children and those with ADHD. Confirmatory …

Background: A key issue in the nosology of attention deficit hyperactivity disorder (ADHD)
has concerned whether the DSM‐IV combined (ADHD‐C) and primarily inattentive (ADHD …

Recent articles addressing the heterogeneity of attention deficit hyperactivity disorder are
reviewed. The impact of subtyping patients by differences in comorbidity, family psychiatric …

Attention deficit/hyperactivity disorder (ADHD) is a common and impairing neuropsychiatric
disorder with onset at preschool age and strong persistence over time. Its validity as a …

Background Attention-deficit/hyperactivity disorder (ADHD) can be viewed as the extreme
end of traits in the general population. Epidemiological and twin studies suggest that ADHD …

OBJECTIVE: To determine the 5-year prospective stability of population-based and DSM-IV
subtypes of attention-deficit/hyperactivity disorder (ADHD) as well as to explore predictors of …

Concerns have been raised about the ability of diagnostic criteria for attention-
deficit/hyperactivity disorder (ADHD) to distinguish subtypes that are clearly distinct from …

Attention-deficit/hyperactivity disorder (ADHD [MIM 143465]) is the most common behavioral
disorder of childhood. Twin, adoption, segregation, association, and linkage studies have …