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AN INCREASE OF INTELLIGENCE IN SUDAN, 1987–2007

Published online by Cambridge University Press:  01 March 2009

OMAR KHALEEFA ,
AFRA SULMAN  and
RICHARD LYNN
OMAR KHALEEFA
Affiliation:
University of Khartoum, Sudan
AFRA SULMAN
Affiliation:
University of Khartoum, Sudan
RICHARD LYNN
Affiliation:
University of Ulster, Coleraine, Northern Ireland, UK
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Summary

Results are reported for mean IQs on the WAIS-R in Sudan in 1987 and 2007. There was a gain of 4·05 Full Scale IQ points over the 20-year period, representing a gain of 2·05 IQ points a decade. The Verbal IQ showed a loss of 1·65 IQ points, while the Performance IQ showed a gain of 7·2 IQ points. These results are broadly consistent with those in economically developed countries in showing that mean IQ on the WAIS-R has increased in Sudan, and the Performance IQ has increased more than the Verbal IQ.

Type
Research Article
Information
Journal of Biosocial Science , Volume 41 , Issue 2 , March 2009 , pp. 279 - 283
Copyright
Copyright © Cambridge University Press 2008

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