Gifted Issues Discussion homepage Forums Identification, Testing & Assessment LOG - what would you call DD and DS?

Just to clarify something.

GAI (General Ability Index) is derived from the sum of the subtests that go into calculating the VCI and PRI. It is not, in and of itself, a set of subtests (meaning it doesn't have its own "private" subtests). It's essentially used as a replacement for a full-scale IQ score that cuts out working memory and processing speed results (because these tests have much lower levels of 'g'). From what I understand, you can always calculate a GAI from WISC-IV subtests, but it isn't always explicitly calculated because it often doesn't differ wildly from full-scale IQ (which is a summary of all of the subtests).

It's believed by most professionals that GAI is actually a better indicator of IQ than FSIQ, as the WMI and PSI are often areas of relative weakness, particularly for 2e individuals.