A Negative Flynn Effect in Khartoum, the Sudanese capital

Edward Dutton, Salaheldin Farah Bakhiet, Khaled Elsayed Ziada, Yossry Ahmed Sayed Essa and Tahani Abdulrahman Muhammed Blahmar

Intelligence, 2017, vol. 63, issue C, 51-55

Abstract: We compare the results of the Standard Progressive Matrices on two samples from Khartoum, one from 1999 (N 6877) and the other from 2010 (N 5659), both aged between 9 and 25. We show that in 7 out of 12 age groups there has been a significant Negative Flynn Effect over this period. Among those aged 9 to 18 - directly comparable as they are population samples - we found a significant aggregate loss of 2.13 IQ points between 1999 and 2010 comparing these two groups. The sample, in part, is elite and we note that a cessation of the Flynn Effect has also been reported in an elite Brazilian sample; another developing country. We examine a number of factors which may be behind our finding, in particular changes in the Sudanese education system, changes in the Khartoum population, and dysgenic fertility in Sudan.

Keywords: Negative Flynn Effect; Standard Progressive Matrices; Sudan; Developing countries; Khartoum (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:intell:v:63:y:2017:i:c:p:51-55

DOI: 10.1016/j.intell.2017.05.003

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