GROWTH IN-UTERO AND COGNITIVE FUNCTION IN ADULT LIFE - FOLLOW-UP-STUDY OF PEOPLE BORN BETWEEN 1920 AND 1943

Objectives-To examine the relation between fetal growth and cognitive function in adult life. Design-A follow up study of men and women whos e birth weights and other measurements of body size had been recorded at birth. Setting-Hertfordshire, Preston, and Sheffield. Subjects-1576 men and women born in Hertfordshire, Sheffield, or Preston between 19 20 and 1943. Main outcome measures-Intelligence quotient as measured b y the AH4 test and amount of decline in cognitive function with age as estimated by the difference between score on the Mill Hill vocabulary test and score on the AH4 test. Results-Score on the intelligence tes t was higher in people who had a large biparietal head diameter at bir th, but it was not related to any other measure of body size or propor tions. No association was found between decline in cognitive function and any measure of size or proportions at birth. Conclusion-Impaired f etal growth was not associated with poorer cognitive performance in ad ult life. Adaptations made by the fetus in response to conditions that retard its growth seem to be largely successful in maintaining brain development.