Symptom properties as a function of ADHD type: an argument for continued study of sluggish cognitive tempo.

摘要: Inconsistent alertness and orientation (sluggishness, drowsiness, daydreaming) were reported to accompany Attention Deficit Disorder (ADD) without Hyperactivity in DSM-III. Such Sluggish Cognitive Tempo items tested the DSM-IV Field Trial for ADHD, but discarded from Inattention symptom list because of poor negative predictive power. Using 692 children referred a pediatric subspecialty clinic re-evaluated. When Hyperactivity–Impulsivity was absent (i.e., using only cases Inattentive Type plus controls), showed substantially improved utility as symptoms Inattention. Factor analyses distinguished factor an factor. ADHD types compared, uniquely elevated on Tempo. These findings suggest that (a) are adequate Type, or (b) may distinguish two subtypes Type. Either conclusion is incompatible with nosology DSM-IV.