Originally Posted by Jon Z
They also say:
Quote
Flanagan and Kaufman (2004), in Essentials of WISC-IV Assessment, deem the FSIQ �not interpretable� if Composite scores vary by 23 points (1.5 standard deviations) or more.
My DS12 just took the WISC-IV. His PSI came out ~40 points lower than the other three. I'm trying to figure out what that really means. Not much luck in finding anything I believe so far. The math is all pretty fuzzy.
(JZ)


DS had the same issue with ~20 point difference in PSI. That's why I asked the question about the significance of PSI, especially when it affects the FSIQ. It seems odd to me that a test would be improved, yet have potential differentiations between GAI and FSIQ. I'm sure there's rhyme and reason to it, I've just not quite made sense of it yet. I didn't know what GAI was until I came here, that info wasn't provided on DSs report. I would think that if PSI was the primary factor in a FSIQ being depressed, then the GAI would automatically be provided and used because the ability is there, KWIM? Eventually, I'll grasp it all.

Good luck.