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.Abstract Teaser