Raven's is not a pure measure of general intelligence: Implications for g factor theory and the brief measurement of g

It has been claimed that Raven's Progressive Matrices is a pure indicator of general intelligence (g). Such a claim implies three observations: (1) Raven's has a remarkably high association with g; (2) Raven's does not share variance with a group-level factor; and (3) Raven's is associated with virtually no test specificity. The existing factor analytic research relevant to Raven's and g is very mixed, likely because of the variety of factor...