eductive

These he called "eductive" ability and "reproductive" ability.

Accordingly, he set about developing tests of the two components of g identified by Spearman - namely eductive (meaning making) and reproductive ability.

Fluid and crystallized intelligence are discrete factors of general intelligence, or g. Although formally recognized by Cattell, the distinction was foreshadowed by Charles Spearman who originally developed the theory of g and made a similar observation regarding the difference between eductive and reproductive mental ability.