OBJECTIVE: To examine ratings and objective measures of attention-deficit/hyperactivity
disorder (ADHD) symptoms to assess whether ADHD children with and without comorbid …

OBJECTIVES: Previous research has been inconclusive whether attention-
deficit/hyperactivity disorder (ADHD), when comorbid with disruptive disorders (oppositional …

OBJECTIVE: To investigate correlates of internalizing and externalizing psychopathology in
a clinical sample of children with attention-deficit/hyperactivity disorder (ADHD). METHOD …

Background Intent-to-treat analyses of the study revealed that medication management,
alone or combined with intensive behavioral treatment, was superior to behavioral treatment …

OBJECTIVE: To study externalizing and internalizing comorbidity patterns in 6− to 12-year-
old children with attention-deficit/hyperactivity disorder (ADHD) combined subtype (n= 27) …

Purpose To estimate the prevalence of the ADHD phenotype based on parent and teacher
reports in a general population sample of 7-to 9-year-old Norwegian children and evaluate …

OBJECTIVE: To describe the clinical course of attention-deficit/hyperactivity disorder
(ADHD) symptom severity and diagnosis from ages 3 to 5 up to 9 to 12 years during a 6-year …

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

To investigate endorsement patterns among the 18 DSM-IV symptoms of ADHD in a
longitudinal sample of children with and without ADHD (n= 144), as assessed at ages 4-5, 5 …

Objective: The aim of this study was to describe the clinical presentation of preschoolers
diagnosed with moderate to severe attention-deficit/hyperactivity disorder (ADHD) recruited …