Twins in a child psychiatry clinic.
The authors found that 22 of the 2,015 referrals to a children's psychiatric clinic during a six-year period were twins--half the number that would be expected on the basis of the national incidence of twins. Evidence of minimal brain dysfunction was found in a higher percentage of the twins than in a matched nontwin group. The authors suggest that factors often inherent in twins (e.g., prematurity and birth difficulties) may be related to this finding.
D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000235:genetics; D001720:Birth Injuries; D002648:Child; D002653:Child Behavior Disorders / Q000235:genetics*; D002667:Child Reactive Disorders / Q000235:genetics; D002675:Child, Preschool; D004200:Diseases in Twins / Q000453:epidemiology*; D004291:Dominance-Subordination; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007859:Learning Disabilities / Q000235:genetics; D008297:Male; D001523:Mental Disorders / Q000235:genetics*; D009497:Neurotic Disorders / Q000235:genetics; D011602:Psychophysiologic Disorders / Q000235:genetics