Abstract
Two administrations of the Coloured Progressive
Matrices in Egypt were compared. The first was
administered to a large, representative national
sample between 2011 and 2013. The second was
administered to primary school pupils in villages in
Menoufia in northern Egypt in 2017. Adjusting for
the Flynn Effect, the IQ of the rural northern
Egyptians was shown to be statistically
significantly higher than the national average. It
is demonstrated that this is consistent with
regional socioeconomic differences in Egypt, which
strongly imply that northern Egypt has a higher
average IQ than southern Egypt.