Empirically, the score on the whole IQ test is highly correlated with the score on any subset of the questions. There is a difference between scores on verbal/s

Empirically, the score on the whole IQ test is highly correlated with the score on any subset of the questions. There is a difference between scores on verbal/symbolic and visual/spatial questions that depends on the testee, but it is usually modest except in cases of severe brain damage or malformation.