ABSTRACT
Suppose all of human intelligence were reducible to just a single thing. How simple things would be! People could be ranked on intelligence just as they are ranked on height. People could be chosen for jobs as physicists, literary editors, artists, business executives, lathe operators, accountants, lawyers, psychiatrists, and interpreters, among other things, on the basis of just a single test. Of course, there might be a few annoying specific abilities that would distinguish these folks. But presumably, they would be relatively small in importance. After all, there have been two books entitled The g Factor (Brand, 1996; Jensen, 1998) during the past few years, not two books entitled The s Factors (Nobody, No Year).
