This community study assigned 129 4-year-olds to groups at risk for attention deficit
hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), both ADHD and ODD, or …

Background: To evaluate associations between attention‐deficit/hyperactivity disorder
(ADHD) and comorbid psychiatric disorders using research‐identified incident cases of …

Objective Epidemiological studies indicate the relevance of pre-and perinatal risk factors for
the genesis of attention deficit/hyperactivity disorder and autism spectrum disorder. This …

Objective: The aim of the present study was to examine changes of attention-deficit–
hyperactivity disorder (ADHD) symptoms and psychiatric comorbidities at adolescence, and …

Background Previous research on the etiology of ADHD symptoms suggests that
neuropsychological differences may be present as early as birth; however, the diagnosis is …

Attention-deficit/hyperactivity disorder (ADHD) is the most prevalent child psychiatric
disorder, and the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition …

Oppositional defiant disorder (ODD) is highly prevalent in attention-deficit/hyperactivity
disorder (ADHD). Individuals with both ADHD and ODD (ADHD+ ODD) show a considerably …

This study examined the prenatal, postnatal and demographic predictors of parent-reported
attention-deficit/hyperactivity disorder (ADHD) in an Australian population-based sample …

Attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD)
frequently co-occur. Comorbidity of these 2 childhood disruptive behavior domains has not …

Objective: To identify preschool predictors of registered ADHD diagnoses and compare two
ADHD rating scales, Child Behavior Checklist (CBCL) and Conners' Parent Rating Scale …