Performance IQ as opposed to what? You mean the subtest of WAIS? Probably full WAIS, verbal+performance, is a better predictor than just performance. Probably you could find a set of subtests that would be better than the whole test, but I think performance was just chosen as the complement of verbal. And verbal probably wasn’t designed as a coherent test of verbal skill for normal people, but as intelligence tests that had a prerequisite of verbal skill that might be misleading for the retarded, who are the main subject for IQ tests.
I meant the “Perceptual reasoning index scale” in particular ; I don’t really care about verbal score as I doubt it could be a limiting factor for me. The 2 others indexes (working memory, processing speed) might be important but I will give them importance only if the score for perceptual reasoning is already high enough.
(using the WAIS-IV, performance IQ is indeed an older concept)
Performance IQ as opposed to what? You mean the subtest of WAIS? Probably full WAIS, verbal+performance, is a better predictor than just performance. Probably you could find a set of subtests that would be better than the whole test, but I think performance was just chosen as the complement of verbal. And verbal probably wasn’t designed as a coherent test of verbal skill for normal people, but as intelligence tests that had a prerequisite of verbal skill that might be misleading for the retarded, who are the main subject for IQ tests.
I meant the “Perceptual reasoning index scale” in particular ; I don’t really care about verbal score as I doubt it could be a limiting factor for me. The 2 others indexes (working memory, processing speed) might be important but I will give them importance only if the score for perceptual reasoning is already high enough.
(using the WAIS-IV, performance IQ is indeed an older concept)