• Perinatal and medical information, growth, and the social background of 258 children who, in a prospective study, had superior intelligence at 7 years of age were reviewed. The subjects were divided into three categories on the basis of the results of psychological evaluation at age 7. Comparisons were made between those with superior (intelligence quotient ≥ 120), average (IQ between 80 and 119), and low intelligence (IQ ≤ 79).
A favorable parental social and educational background was the best correlate of superior intelligence in the children. Larger head size from 1 year of age was an early finding associated with superior intelligence. Greater height and weight, from 4 years of age were later findings.
Correlations between psychological performance at ages 4 and 7 years were statistically significant. Perinatal factors and medical complications did not affect the intellectual status of children with superior intelligence.
(Am J Dis Child 130:481-487, 1976)
Fisch RO, Bilek MK, Horrobin JM, Chang P. Children With Superior Intelligence at 7 Years of Age: A Prospective Study of the Influence of Perinatal, Medical, and Socioeconomic Factors. Am J Dis Child. 1976;130(5):481–487. doi:10.1001/archpedi.1976.02120060027006
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