Originally Posted by master of none
You probably don't want to hear this, but here goes anyway. According to this put out by Pearson on interpreting GAI, your tester seems reasonable.

http://www.pearsonassessments.com/hai/Images/Products/Wechsler/Wechsler_GAI.pdf

Common GAI Myths #2 and #3
•Myth 2
The GAI can be used routinely as a substitute for the FSIQ
–
With rare exceptions (motor impairment, invalid FSIQ score), the GAI is not a substitute for the FSIQ
–
FSIQ more comprehensive; Working memory and processing speed are
integral aspects of general intelligence
•Myth 3:
The FSIQ is invalid if there are significant Index- Score differences,so use the GAI
–
FSIQ is invalid only if there are too few valid subtests to derive the score (even with substitution and proration)
–
Most of us (73.5% in WAIS-IV) have at least one Index Score that
significantly differs from the mean of the Index Scores

Actually, I don't want the GAI reported *instead of* FSIQ - I want neither reported if they are so "invalid." If FSIQ is reported, I kind-of wanted GAI reported as well particularly considering the fact that DS has pretty significant motor-visual disabilities that result in a positively huge scatter between PSI and VCI.

Also, would not THREE STANDARD DEVIATIONS between PSI and VCI render the FSIQ "invalid" even under these guidelines?

AND my DS does have a significant impairment of motor-visual and writing...

Last edited by Irena; 09/04/13 04:16 PM.