Abstract
Children [212] recruited at random at birth have been followed annually in a prospective longitudinal study with somatic and psychological data, including verbal communicative ability, rated by a psychologist at 3 yr of age. At the age of 20 yr, 175 were still in the study. Intelligence tests at 5, 8, 11, 14 and 17, teacher''s assessments in grades 3 and 6, educational level at 20 yr of age and sociometric and behavioral assessments show that children with retarded speech at 3 constitute a risk group that requires special attention.

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