IQ is used as a proxy for g
. If national economic performance in an absence of proportionate natural resources can be taken, in turn, as a proxy for national technological development, then regarding the importance of national g
to national technological development, Arthur Jensen had this to say:
(Arthur Jensen. The g Factor
In other words, the technological proficiency of a society is largely a function of its g
. This has also been found to be the case by Raymond Cattell, Hans Eysenck, Richard Lynn, Philippe Rushton, Chris Brand, and others.